40742568 has 128 divisors (see below), whose sum is σ = 120960000. Its totient is φ = 12678336.

The previous prime is 40742549. The next prime is 40742573. The reversal of 40742568 is 86524704.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293043 + ... + 293181.

It is an arithmetic number, because the mean of its divisors is an integer number (945000).

Almost surely, 2^40742568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40742568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60480000).

40742568 is an abundant number, since it is smaller than the sum of its proper divisors (80217432).

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

40742568 is a wasteful number, since it uses less digits than its factorization.

40742568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 40742568 is about 6382.9905216912. The cubic root of 40742568 is about 344.0985160421.

The spelling of 40742568 in words is "forty million, seven hundred forty-two thousand, five hundred sixty-eight".