64242072 has 40 divisors (see below), whose sum is σ = 179939100. Its totient is φ = 21413808.

The previous prime is 64242067. The next prime is 64242103. The reversal of 64242072 is 27024246.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 48922 + ... + 50217.

Almost surely, 2^64242072 is an apocalyptic number.

It is an amenable number.

64242072 is an abundant number, since it is smaller than the sum of its proper divisors (115697028).

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

64242072 is a wasteful number, since it uses less digits than its factorization.

64242072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99157 (or 99144 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 64242072 is about 8015.1152206316. The cubic root of 64242072 is about 400.5036821612.

The spelling of 64242072 in words is "sixty-four million, two hundred forty-two thousand, seventy-two".