137998242 has 28 divisors (see below), whose sum is σ = 310357350. Its totient is φ = 45998928.

The previous prime is 137998241. The next prime is 137998247. The reversal of 137998242 is 242899731.

137998242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 77951241 + 60047001 = 8829^2 + 7749^2 .

It is not an unprimeable number, because it can be changed into a prime (137998241) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 45867 + ... + 48782.

Almost surely, 2^137998242 is an apocalyptic number.

137998242 is an abundant number, since it is smaller than the sum of its proper divisors (172359108).

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

137998242 is an frugal number, since it uses more digits than its factorization.

137998242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94669 (or 94654 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 137998242 is about 11747.2652987834. The cubic root of 137998242 is about 516.7627308484.

The spelling of 137998242 in words is "one hundred thirty-seven million, nine hundred ninety-eight thousand, two hundred forty-two".