342769921 has 16 divisors (see below), whose sum is σ = 377286336. Its totient is φ = 309456576.

The previous prime is 342769913. The next prime is 342769939. The reversal of 342769921 is 129967243.

It is not a de Polignac number, because 342769921 - 2³ = 342769913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342769951) 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, 304666 + ... + 305788.

It is an arithmetic number, because the mean of its divisors is an integer number (23580396).

Almost surely, 2^342769921 is an apocalyptic number.

It is an amenable number.

342769921 is a deficient number, since it is larger than the sum of its proper divisors (34516415).

342769921 is a wasteful number, since it uses less digits than its factorization.

342769921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its digits is 163296, while the sum is 43.

The square root of 342769921 is about 18514.0465863085. The cubic root of 342769921 is about 699.8434486642.

The spelling of 342769921 in words is "three hundred forty-two million, seven hundred sixty-nine thousand, nine hundred twenty-one".