137985942 has 16 divisors (see below), whose sum is σ = 290496960. Its totient is φ = 43574472.

The previous prime is 137985931. The next prime is 137985949. The reversal of 137985942 is 249589731.

It is a junction number, because it is equal to n+sod(n) for n = 137985891 and 137985900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137985949) 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, 605088 + ... + 605315.

It is an arithmetic number, because the mean of its divisors is an integer number (18156060).

Almost surely, 2^137985942 is an apocalyptic number.

137985942 is an abundant number, since it is smaller than the sum of its proper divisors (152511018).

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

137985942 is a wasteful number, since it uses less digits than its factorization.

137985942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210427.

The product of its digits is 544320, while the sum is 48.

The square root of 137985942 is about 11746.7417610161. The cubic root of 137985942 is about 516.7473771011.

The spelling of 137985942 in words is "one hundred thirty-seven million, nine hundred eighty-five thousand, nine hundred forty-two".