129377792 has 20 divisors (see below), whose sum is σ = 258503916. Its totient is φ = 64688640.

The previous prime is 129377777. The next prime is 129377813. The reversal of 129377792 is 297773921.

It is a super-2 number, since 2×129377792² = 33477226125590528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 125834 + ... + 126857.

Almost surely, 2^129377792 is an apocalyptic number.

It is an amenable number.

129377792 is a deficient number, since it is larger than the sum of its proper divisors (129126124).

129377792 is an frugal number, since it uses more digits than its factorization.

129377792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252709 (or 252693 counting only the distinct ones).

The product of its digits is 333396, while the sum is 47.

The square root of 129377792 is about 11374.4358981006. The cubic root of 129377792 is about 505.7702092101.

The spelling of 129377792 in words is "one hundred twenty-nine million, three hundred seventy-seven thousand, seven hundred ninety-two".