40047042 has 16 divisors (see below), whose sum is σ = 91536192. Its totient is φ = 11442000.

The previous prime is 40047031. The next prime is 40047083. The reversal of 40047042 is 24074004.

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 7 ways as a sum of consecutive naturals, for example, 476709 + ... + 476792.

It is an arithmetic number, because the mean of its divisors is an integer number (5721012).

Almost surely, 2^40047042 is an apocalyptic number.

40047042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40047042 is an abundant number, since it is smaller than the sum of its proper divisors (51489150).

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

40047042 is a wasteful number, since it uses less digits than its factorization.

40047042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953513.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40047042 is about 6328.2732241900. The cubic root of 40047042 is about 342.1292046270.

The spelling of 40047042 in words is "forty million, forty-seven thousand, forty-two".