1231374942 has 48 divisors (see below), whose sum is σ = 3060794880. Its totient is φ = 350474256.

The previous prime is 1231374919. The next prime is 1231374953. The reversal of 1231374942 is 2494731321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1231374897 and 1231374906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14559 + ... + 51717.

It is an arithmetic number, because the mean of its divisors is an integer number (63766560).

Almost surely, 2^1231374942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231374942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530397440).

1231374942 is an abundant number, since it is smaller than the sum of its proper divisors (1829419938).

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

1231374942 is a wasteful number, since it uses less digits than its factorization.

1231374942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37437 (or 37434 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 1231374942 is about 35090.9524236661. The cubic root of 1231374942 is about 1071.8403539782.

The spelling of 1231374942 in words is "one billion, two hundred thirty-one million, three hundred seventy-four thousand, nine hundred forty-two".