342123640 has 32 divisors (see below), whose sum is σ = 815060880. Its totient is φ = 128799232.

The previous prime is 342123611. The next prime is 342123739. The reversal of 342123640 is 46321243.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250882 + ... + 252241.

Almost surely, 2^342123640 is an apocalyptic number.

It is an amenable number.

342123640 is an abundant number, since it is smaller than the sum of its proper divisors (472937240).

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

342123640 is a wasteful number, since it uses less digits than its factorization.

342123640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503151 (or 503147 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 342123640 is about 18496.5845495864. The cubic root of 342123640 is about 699.4033282833.

Adding to 342123640 its reverse (46321243), we get a palindrome (388444883).

The spelling of 342123640 in words is "three hundred forty-two million, one hundred twenty-three thousand, six hundred forty".