40551042 has 32 divisors (see below), whose sum is σ = 94442112. Its totient is φ = 11366784.

The previous prime is 40551023. The next prime is 40551079. The reversal of 40551042 is 24015504.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6883 + ... + 11334.

It is an arithmetic number, because the mean of its divisors is an integer number (2951316).

Almost surely, 2^40551042 is an apocalyptic number.

40551042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40551042 is an abundant number, since it is smaller than the sum of its proper divisors (53891070).

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

40551042 is a wasteful number, since it uses less digits than its factorization.

40551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40551042 is about 6367.9700062108. The cubic root of 40551042 is about 343.5584801136.

Adding to 40551042 its reverse (24015504), we get a palindrome (64566546).

The spelling of 40551042 in words is "forty million, five hundred fifty-one thousand, forty-two".