342055021 has 16 divisors (see below), whose sum is σ = 429994368. Its totient is φ = 266529120.

The previous prime is 342055009. The next prime is 342055027. The reversal of 342055021 is 120550243.

It is not a de Polignac number, because 342055021 - 2⁵ = 342054989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342054983 and 342055001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342055027) 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, 9040 + ... + 27673.

It is an arithmetic number, because the mean of its divisors is an integer number (26874648).

Almost surely, 2^342055021 is an apocalyptic number.

It is an amenable number.

342055021 is a deficient number, since it is larger than the sum of its proper divisors (87939347).

342055021 is an equidigital number, since it uses as much as digits as its factorization.

342055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36753 (or 36731 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 342055021 is about 18494.7295465492. The cubic root of 342055021 is about 699.3565658848.

It can be divided in two parts, 3 and 42055021, that added together give a palindrome (42055024).

The spelling of 342055021 in words is "three hundred forty-two million, fifty-five thousand, twenty-one".