1237396542 has 16 divisors (see below), whose sum is σ = 2527448832. Its totient is φ = 403689560.

The previous prime is 1237396519. The next prime is 1237396543. The reversal of 1237396542 is 2456937321.

It is a junction number, because it is equal to n+sod(n) for n = 1237396494 and 1237396503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1237396543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2193684 + ... + 2194247.

It is an arithmetic number, because the mean of its divisors is an integer number (157965552).

Almost surely, 2^1237396542 is an apocalyptic number.

1237396542 is an abundant number, since it is smaller than the sum of its proper divisors (1290052290).

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

1237396542 is a wasteful number, since it uses less digits than its factorization.

1237396542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387983.

The product of its digits is 272160, while the sum is 42.

The square root of 1237396542 is about 35176.6476799595. The cubic root of 1237396542 is about 1073.5846647483.

The spelling of 1237396542 in words is "one billion, two hundred thirty-seven million, three hundred ninety-six thousand, five hundred forty-two".