342121357 has 2 divisors, whose sum is σ = 342121358. Its totient is φ = 342121356.

The previous prime is 342121337. The next prime is 342121361. The reversal of 342121357 is 753121243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338044996 + 4076361 = 18386^2 + 2019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342121357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342121327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171060678 + 171060679.

It is an arithmetic number, because the mean of its divisors is an integer number (171060679).

Almost surely, 2^342121357 is an apocalyptic number.

It is an amenable number.

342121357 is a deficient number, since it is larger than the sum of its proper divisors (1).

342121357 is an equidigital number, since it uses as much as digits as its factorization.

342121357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 342121357 is about 18496.5228353872. The cubic root of 342121357 is about 699.4017725676.

The spelling of 342121357 in words is "three hundred forty-two million, one hundred twenty-one thousand, three hundred fifty-seven".