40159542 has 16 divisors (see below), whose sum is σ = 85043952. Its totient is φ = 12599040.

The previous prime is 40159529. The next prime is 40159543. The reversal of 40159542 is 24595104.

It is a super-2 number, since 2×40159542² = 3225577627299528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40159543) 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, 196759 + ... + 196962.

It is an arithmetic number, because the mean of its divisors is an integer number (5315247).

Almost surely, 2^40159542 is an apocalyptic number.

40159542 is an abundant number, since it is smaller than the sum of its proper divisors (44884410).

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

40159542 is a wasteful number, since it uses less digits than its factorization.

40159542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393743.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 40159542 is about 6337.1556711193. The cubic root of 40159542 is about 342.4492744598.

The spelling of 40159542 in words is "forty million, one hundred fifty-nine thousand, five hundred forty-two".