45402042 has 32 divisors (see below), whose sum is σ = 107126784. Its totient is φ = 12553200.

The previous prime is 45402041. The next prime is 45402059. The reversal of 45402042 is 24020454.

It is a super-2 number, since 2×45402042² = 4122690835539528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (45402041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16134 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (3347712).

Almost surely, 2^45402042 is an apocalyptic number.

45402042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

45402042 is an abundant number, since it is smaller than the sum of its proper divisors (61724742).

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

45402042 is a wasteful number, since it uses less digits than its factorization.

45402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34914.

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

The square root of 45402042 is about 6738.1037391836. The cubic root of 45402042 is about 356.7454658437.

Adding to 45402042 its reverse (24020454), we get a palindrome (69422496).

The spelling of 45402042 in words is "forty-five million, four hundred two thousand, forty-two".