40117542 has 16 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 13353032.

The previous prime is 40117541. The next prime is 40117579. The reversal of 40117542 is 24571104.

It is a super-2 number, since 2×40117542² = 3218834352243528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40117541) 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, 42 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (5022000).

Almost surely, 2^40117542 is an apocalyptic number.

40117542 is an abundant number, since it is smaller than the sum of its proper divisors (40234458).

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

40117542 is a wasteful number, since it uses less digits than its factorization.

40117542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 40117542 is about 6333.8410147398. The cubic root of 40117542 is about 342.3298517296.

Adding to 40117542 its reverse (24571104), we get a palindrome (64688646).

The spelling of 40117542 in words is "forty million, one hundred seventeen thousand, five hundred forty-two".