356421029 has 2 divisors, whose sum is σ = 356421030. Its totient is φ = 356421028.

The previous prime is 356421017. The next prime is 356421073. The reversal of 356421029 is 920124653.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219484225 + 136936804 = 14815^2 + 11702^2 .

It is a cyclic number.

It is not a de Polignac number, because 356421029 - 2⁸ = 356420773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 356420986 and 356421004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (356421929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178210514 + 178210515.

It is an arithmetic number, because the mean of its divisors is an integer number (178210515).

Almost surely, 2^356421029 is an apocalyptic number.

It is an amenable number.

356421029 is a deficient number, since it is larger than the sum of its proper divisors (1).

356421029 is an equidigital number, since it uses as much as digits as its factorization.

356421029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 356421029 is about 18879.1162134248. The cubic root of 356421029 is about 709.0133945905.

The spelling of 356421029 in words is "three hundred fifty-six million, four hundred twenty-one thousand, twenty-nine".