342948021 has 16 divisors (see below), whose sum is σ = 521406144. Its totient is φ = 198630144.

The previous prime is 342947999. The next prime is 342948037. The reversal of 342948021 is 120849243.

It is not a de Polignac number, because 342948021 - 2⁷ = 342947893 is a prime.

It is a super-2 number, since 2×342948021² = 235226690215632882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342948721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257971 + ... + 259296.

It is an arithmetic number, because the mean of its divisors is an integer number (32587884).

Almost surely, 2^342948021 is an apocalyptic number.

It is an amenable number.

342948021 is a deficient number, since it is larger than the sum of its proper divisors (178458123).

342948021 is a wasteful number, since it uses less digits than its factorization.

342948021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517300.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 342948021 is about 18518.8558231873. The cubic root of 342948021 is about 699.9646383497.

The spelling of 342948021 in words is "three hundred forty-two million, nine hundred forty-eight thousand, twenty-one".