45143240 has 32 divisors (see below), whose sum is σ = 106920000. Its totient is φ = 17106624.

The previous prime is 45143237. The next prime is 45143251. The reversal of 45143240 is 4234154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28940 + ... + 30459.

It is an arithmetic number, because the mean of its divisors is an integer number (3341250).

Almost surely, 2^45143240 is an apocalyptic number.

45143240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45143240 is an abundant number, since it is smaller than the sum of its proper divisors (61776760).

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

45143240 is a wasteful number, since it uses less digits than its factorization.

45143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59429 (or 59425 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 45143240 is about 6718.8719291262. The cubic root of 45143240 is about 356.0663302740.

Adding to 45143240 its reverse (4234154), we get a palindrome (49377394).

The spelling of 45143240 in words is "forty-five million, one hundred forty-three thousand, two hundred forty".