77142412 has 12 divisors (see below), whose sum is σ = 135158296. Its totient is φ = 38525760.

The previous prime is 77142409. The next prime is 77142419. The reversal of 77142412 is 21424177.

It is not an unprimeable number, because it can be changed into a prime (77142419) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7389 + ... + 14452.

Almost surely, 2^77142412 is an apocalyptic number.

It is an amenable number.

77142412 is a deficient number, since it is larger than the sum of its proper divisors (58015884).

77142412 is a wasteful number, since it uses less digits than its factorization.

77142412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22728 (or 22726 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 77142412 is about 8783.0753156283. The cubic root of 77142412 is about 425.6942047836.

Adding to 77142412 its reverse (21424177), we get a palindrome (98566589).

The spelling of 77142412 in words is "seventy-seven million, one hundred forty-two thousand, four hundred twelve".