77142934 has 16 divisors (see below), whose sum is σ = 127417536. Its totient is φ = 34736200.

The previous prime is 77142899. The next prime is 77142937. The reversal of 77142934 is 43924177.

It is a super-2 number, since 2×77142934² = 11902064532256712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77142893 and 77142902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77142937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14032 + ... + 18739.

It is an arithmetic number, because the mean of its divisors is an integer number (7963596).

Almost surely, 2^77142934 is an apocalyptic number.

77142934 is a deficient number, since it is larger than the sum of its proper divisors (50274602).

77142934 is a wasteful number, since it uses less digits than its factorization.

77142934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32891.

The product of its digits is 42336, while the sum is 37.

The square root of 77142934 is about 8783.1050318210. The cubic root of 77142934 is about 425.6951649639.

It can be divided in two parts, 7714 and 2934, that added together give a cube (10648 = 22³).

The spelling of 77142934 in words is "seventy-seven million, one hundred forty-two thousand, nine hundred thirty-four".