342698621 has 2 divisors, whose sum is σ = 342698622. Its totient is φ = 342698620.

The previous prime is 342698591. The next prime is 342698627. The reversal of 342698621 is 126896243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315772900 + 26925721 = 17770^2 + 5189^2 .

It is a cyclic number.

It is not a de Polignac number, because 342698621 - 2⁶ = 342698557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342698627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171349310 + 171349311.

It is an arithmetic number, because the mean of its divisors is an integer number (171349311).

Almost surely, 2^342698621 is an apocalyptic number.

It is an amenable number.

342698621 is a deficient number, since it is larger than the sum of its proper divisors (1).

342698621 is an equidigital number, since it uses as much as digits as its factorization.

342698621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 342698621 is about 18512.1209211695. The cubic root of 342698621 is about 699.7949201955.

The spelling of 342698621 in words is "three hundred forty-two million, six hundred ninety-eight thousand, six hundred twenty-one".