374029721 has 4 divisors (see below), whose sum is σ = 402801252. Its totient is φ = 345258192.

The previous prime is 374029697. The next prime is 374029723. The reversal of 374029721 is 127920473.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127920473 = 281 ⋅455233.

It can be written as a sum of positive squares in 2 ways, for example, as 22992025 + 351037696 = 4795^2 + 18736^2 .

It is a cyclic number.

It is not a de Polignac number, because 374029721 - 2¹⁴ = 374013337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (374029723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14385746 + ... + 14385771.

It is an arithmetic number, because the mean of its divisors is an integer number (100700313).

Almost surely, 2^374029721 is an apocalyptic number.

It is an amenable number.

374029721 is a deficient number, since it is larger than the sum of its proper divisors (28771531).

374029721 is a wasteful number, since it uses less digits than its factorization.

374029721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28771530.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 374029721 is about 19339.8480087099. The cubic root of 374029721 is about 720.5022993154.

The spelling of 374029721 in words is "three hundred seventy-four million, twenty-nine thousand, seven hundred twenty-one".