64158742 has 4 divisors (see below), whose sum is σ = 96238116. Its totient is φ = 32079370.

The previous prime is 64158737. The next prime is 64158761. The reversal of 64158742 is 24785146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24785146 = 2 ⋅12392573.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16039684 + ... + 16039687.

It is an arithmetic number, because the mean of its divisors is an integer number (24059529).

Almost surely, 2^64158742 is an apocalyptic number.

64158742 is a deficient number, since it is larger than the sum of its proper divisors (32079374).

64158742 is a wasteful number, since it uses less digits than its factorization.

64158742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32079373.

The product of its digits is 53760, while the sum is 37.

The square root of 64158742 is about 8009.9152305127. The cubic root of 64158742 is about 400.3304394493.

The spelling of 64158742 in words is "sixty-four million, one hundred fifty-eight thousand, seven hundred forty-two".