40120531 has 8 divisors (see below), whose sum is σ = 44510400. Its totient is φ = 35854440.

The previous prime is 40120529. The next prime is 40120547. The reversal of 40120531 is 13502104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40120531 - 2¹ = 40120529 is a prime.

It is a super-2 number, since 2×40120531² = 3219314015443922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40120501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30261 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (5563800).

Almost surely, 2^40120531 is an apocalyptic number.

40120531 is a deficient number, since it is larger than the sum of its proper divisors (4389869).

40120531 is a wasteful number, since it uses less digits than its factorization.

40120531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61889.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40120531 is about 6334.0769651150. The cubic root of 40120531 is about 342.3383534013.

Adding to 40120531 its reverse (13502104), we get a palindrome (53622635).

The spelling of 40120531 in words is "forty million, one hundred twenty thousand, five hundred thirty-one".