342946639 has 12 divisors (see below), whose sum is σ = 407428704. Its totient is φ = 287697984.

The previous prime is 342946633. The next prime is 342946651. The reversal of 342946639 is 936649243.

It is not a de Polignac number, because 342946639 - 2³ = 342946631 is a prime.

It is a super-2 number, since 2×342946639² = 235224794402792642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342946631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72154 + ... + 76759.

It is an arithmetic number, because the mean of its divisors is an integer number (33952392).

Almost surely, 2^342946639 is an apocalyptic number.

342946639 is a deficient number, since it is larger than the sum of its proper divisors (64482065).

342946639 is a wasteful number, since it uses less digits than its factorization.

342946639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148974 (or 148967 counting only the distinct ones).

The product of its digits is 839808, while the sum is 46.

The square root of 342946639 is about 18518.8185098294. The cubic root of 342946639 is about 699.9636981174.

The spelling of 342946639 in words is "three hundred forty-two million, nine hundred forty-six thousand, six hundred thirty-nine".