64142056 has 32 divisors (see below), whose sum is σ = 131957280. Its totient is φ = 28987200.

The previous prime is 64142051. The next prime is 64142059. The reversal of 64142056 is 65024146.

It is a super-2 number, since 2×64142056² = 8228406695814272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64142051) 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, 13915 + ... + 17941.

It is an arithmetic number, because the mean of its divisors is an integer number (4123665).

Almost surely, 2^64142056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64142056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65978640).

64142056 is an abundant number, since it is smaller than the sum of its proper divisors (67815224).

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

64142056 is a wasteful number, since it uses less digits than its factorization.

64142056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64142056 is about 8008.8735787250. The cubic root of 64142056 is about 400.2957313036.

The spelling of 64142056 in words is "sixty-four million, one hundred forty-two thousand, fifty-six".