40120530 has 16 divisors (see below), whose sum is σ = 96289344. Its totient is φ = 10698800.

The previous prime is 40120529. The next prime is 40120547. The reversal of 40120530 is 3502104.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 668646 + ... + 668705.

It is an arithmetic number, because the mean of its divisors is an integer number (6018084).

Almost surely, 2^40120530 is an apocalyptic number.

40120530 is an abundant number, since it is smaller than the sum of its proper divisors (56168814).

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

40120530 is a wasteful number, since it uses less digits than its factorization.

40120530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337361.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40120530 is about 6334.0768861769. The cubic root of 40120530 is about 342.3383505570.

Adding to 40120530 its reverse (3502104), we get a palindrome (43622634).

The spelling of 40120530 in words is "forty million, one hundred twenty thousand, five hundred thirty".