374242721 has 2 divisors, whose sum is σ = 374242722. Its totient is φ = 374242720.

The previous prime is 374242703. The next prime is 374242733. The reversal of 374242721 is 127242473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353440000 + 20802721 = 18800^2 + 4561^2 .

It is an emirp because it is prime and its reverse (127242473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 374242721 - 2⁶ = 374242657 is a prime.

It is a super-2 number, since 2×374242721² = 280115228442967682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (374242741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187121360 + 187121361.

It is an arithmetic number, because the mean of its divisors is an integer number (187121361).

Almost surely, 2^374242721 is an apocalyptic number.

It is an amenable number.

374242721 is a deficient number, since it is larger than the sum of its proper divisors (1).

374242721 is an equidigital number, since it uses as much as digits as its factorization.

374242721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 32.

The square root of 374242721 is about 19345.3539900411. The cubic root of 374242721 is about 720.6390423410.

The spelling of 374242721 in words is "three hundred seventy-four million, two hundred forty-two thousand, seven hundred twenty-one".