374129178921 has 27 divisors (see below), whose sum is σ = 558488611863. Its totient is φ = 241336964160.

The previous prime is 374129178893. The next prime is 374129178931. The reversal of 374129178921 is 129871921473.

The square root of 374129178921 is 611661.

It is a perfect power (a square), and thus also a powerful number.

374129178921 is a `hidden beast` number, since 37 + 412 + 9 + 178 + 9 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 370497429225 + 3631749696 = 608685^2 + 60264^2 .

It is not a de Polignac number, because 374129178921 - 2⁷ = 374129178793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (374129178931) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 56881185 + ... + 56887761.

Almost surely, 2^374129178921 is an apocalyptic number.

374129178921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

374129178921 is the 611661-st square number.

374129178921 is the 305831-st centered octagonal number.

It is an amenable number.

374129178921 is a deficient number, since it is larger than the sum of its proper divisors (184359432942).

374129178921 is an frugal number, since it uses more digits than its factorization.

374129178921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222 (or 6611 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 374129178921 in words is "three hundred seventy-four billion, one hundred twenty-nine million, one hundred seventy-eight thousand, nine hundred twenty-one".