45240042 has 16 divisors (see below), whose sum is σ = 92584800. Its totient is φ = 14729232.

The previous prime is 45240037. The next prime is 45240047. The reversal of 45240042 is 24004254.

It is an interprime number because it is at equal distance from previous prime (45240037) and next prime (45240047).

It is a super-2 number, since 2×45240042² = 4093322800323528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45240047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87417 + ... + 87932.

It is an arithmetic number, because the mean of its divisors is an integer number (5786550).

Almost surely, 2^45240042 is an apocalyptic number.

45240042 is an abundant number, since it is smaller than the sum of its proper divisors (47344758).

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

45240042 is a wasteful number, since it uses less digits than its factorization.

45240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175397.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 45240042 is about 6726.0718104998. The cubic root of 45240042 is about 356.3206564687.

Adding to 45240042 its reverse (24004254), we get a palindrome (69244296).

The spelling of 45240042 in words is "forty-five million, two hundred forty thousand, forty-two".