1455403140 has 120 divisors (see below), whose sum is σ = 4689242712. Its totient is φ = 377602560.

The previous prime is 1455403139. The next prime is 1455403141. The reversal of 1455403140 is 413045541.

It is a happy number.

1455403140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1455403139) and next prime (1455403141).

It can be written as a sum of positive squares in 4 ways, for example, as 805764996 + 649638144 = 28386^2 + 25488^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1455403141) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47800 + ... + 72080.

Almost surely, 2^1455403140 is an apocalyptic number.

1455403140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1455403140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2344621356).

1455403140 is an abundant number, since it is smaller than the sum of its proper divisors (3233839572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1455403140 is a wasteful number, since it uses less digits than its factorization.

1455403140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24339 (or 24328 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1455403140 is about 38149.7462639006. The cubic root of 1455403140 is about 1133.2553270032.

Adding to 1455403140 its reverse (413045541), we get a palindrome (1868448681).

The spelling of 1455403140 in words is "one billion, four hundred fifty-five million, four hundred three thousand, one hundred forty".