307742641 has 2 divisors, whose sum is σ = 307742642. Its totient is φ = 307742640.

The previous prime is 307742629. The next prime is 307742719. The reversal of 307742641 is 146247703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179962225 + 127780416 = 13415^2 + 11304^2 .

It is a cyclic number.

It is not a de Polignac number, because 307742641 - 2⁵ = 307742609 is a prime.

It is equal to p_16648801 and since 307742641 and 16648801 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 307742597 and 307742606.

It is not a weakly prime, because it can be changed into another prime (307742341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153871320 + 153871321.

It is an arithmetic number, because the mean of its divisors is an integer number (153871321).

Almost surely, 2^307742641 is an apocalyptic number.

It is an amenable number.

307742641 is a deficient number, since it is larger than the sum of its proper divisors (1).

307742641 is an equidigital number, since it uses as much as digits as its factorization.

307742641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 307742641 is about 17542.5950474837. The cubic root of 307742641 is about 675.1431912040.

The spelling of 307742641 in words is "three hundred seven million, seven hundred forty-two thousand, six hundred forty-one".