1142480 has 20 divisors (see below), whose sum is σ = 2656452. Its totient is φ = 456960.

The previous prime is 1142473. The next prime is 1142483. The reversal of 1142480 is 842411.

It can be written as a sum of positive squares in 2 ways, for example, as 118336 + 1024144 = 344^2 + 1012^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7061 + ... + 7220.

2^1142480 is an apocalyptic number.

1142480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142480 is an abundant number, since it is smaller than the sum of its proper divisors (1513972).

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

1142480 is a wasteful number, since it uses less digits than its factorization.

1142480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294 (or 14288 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1142480 is about 1068.8685606753. The cubic root of 1142480 is about 104.5400897745.

Adding to 1142480 its reverse (842411), we get a palindrome (1984891).

The spelling of 1142480 in words is "one million, one hundred forty-two thousand, four hundred eighty".