64124040 has 32 divisors (see below), whose sum is σ = 192372480. Its totient is φ = 17099712.

The previous prime is 64124033. The next prime is 64124059. The reversal of 64124040 is 4042146.

It is a super-2 number, since 2×64124040² = 8223785011843200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64123998 and 64124016.

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, 267064 + ... + 267303.

It is an arithmetic number, because the mean of its divisors is an integer number (6011640).

Almost surely, 2^64124040 is an apocalyptic number.

64124040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64124040 is an abundant number, since it is smaller than the sum of its proper divisors (128248440).

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

64124040 is a wasteful number, since it uses less digits than its factorization.

64124040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534381 (or 534377 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 64124040 is about 8007.7487473072. The cubic root of 64124040 is about 400.2582498983.

Adding to 64124040 its reverse (4042146), we get a palindrome (68166186).

The spelling of 64124040 in words is "sixty-four million, one hundred twenty-four thousand, forty".