342140399 has 4 divisors (see below), whose sum is σ = 347749320. Its totient is φ = 336531480.

The previous prime is 342140377. The next prime is 342140417. The reversal of 342140399 is 993041243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993041243 = 199 ⋅4990157.

It is a cyclic number.

It is not a de Polignac number, because 342140399 - 2⁸ = 342140143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342140329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2804369 + ... + 2804490.

It is an arithmetic number, because the mean of its divisors is an integer number (86937330).

Almost surely, 2^342140399 is an apocalyptic number.

342140399 is a deficient number, since it is larger than the sum of its proper divisors (5608921).

342140399 is an equidigital number, since it uses as much as digits as its factorization.

342140399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608920.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 342140399 is about 18497.0375736224. The cubic root of 342140399 is about 699.4147482376.

The spelling of 342140399 in words is "three hundred forty-two million, one hundred forty thousand, three hundred ninety-nine".