342400422 has 48 divisors (see below), whose sum is σ = 847480320. Its totient is φ = 90301536.

The previous prime is 342400393. The next prime is 342400427. The reversal of 342400422 is 224004243.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342400427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17022 + ... + 31217.

It is an arithmetic number, because the mean of its divisors is an integer number (17655840).

Almost surely, 2^342400422 is an apocalyptic number.

342400422 is an abundant number, since it is smaller than the sum of its proper divisors (505079898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342400422 is a wasteful number, since it uses less digits than its factorization.

342400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48277 (or 48264 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 342400422 is about 18504.0650128560. The cubic root of 342400422 is about 699.5918859170.

Adding to 342400422 its reverse (224004243), we get a palindrome (566404665).

The spelling of 342400422 in words is "three hundred forty-two million, four hundred thousand, four hundred twenty-two".