1242557342 has 16 divisors (see below), whose sum is σ = 2007945072. Its totient is φ = 573277440.

The previous prime is 1242557333. The next prime is 1242557363. The reversal of 1242557342 is 2437552421.

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, 80558 + ... + 94734.

It is an arithmetic number, because the mean of its divisors is an integer number (125496567).

Almost surely, 2^1242557342 is an apocalyptic number.

1242557342 is a deficient number, since it is larger than the sum of its proper divisors (765387730).

1242557342 is a wasteful number, since it uses less digits than its factorization.

1242557342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17563.

The product of its digits is 67200, while the sum is 35.

The square root of 1242557342 is about 35249.9268368035. The cubic root of 1242557342 is about 1075.0751249464.

The spelling of 1242557342 in words is "one billion, two hundred forty-two million, five hundred fifty-seven thousand, three hundred forty-two".