64542134 has 16 divisors (see below), whose sum is σ = 99653328. Its totient is φ = 31328352.

The previous prime is 64542133. The next prime is 64542143. The reversal of 64542134 is 43124546.

It is a super-2 number, since 2×64542134² = 8331374122547912, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64542097 and 64542106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64542133) 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, 49904 + ... + 51180.

It is an arithmetic number, because the mean of its divisors is an integer number (6228333).

Almost surely, 2^64542134 is an apocalyptic number.

64542134 is a deficient number, since it is larger than the sum of its proper divisors (35111194).

64542134 is a wasteful number, since it uses less digits than its factorization.

64542134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999.

The product of its digits is 11520, while the sum is 29.

The square root of 64542134 is about 8033.8119221202. The cubic root of 64542134 is about 401.1262716375.

The spelling of 64542134 in words is "sixty-four million, five hundred forty-two thousand, one hundred thirty-four".