137497943 has 4 divisors (see below), whose sum is σ = 149997768. Its totient is φ = 124998120.

The previous prime is 137497879. The next prime is 137497949. The reversal of 137497943 is 349794731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137497943 - 2⁶ = 137497879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137497949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6249896 + ... + 6249917.

It is an arithmetic number, because the mean of its divisors is an integer number (37499442).

Almost surely, 2^137497943 is an apocalyptic number.

137497943 is a deficient number, since it is larger than the sum of its proper divisors (12499825).

137497943 is a wasteful number, since it uses less digits than its factorization.

137497943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12499824.

The product of its digits is 571536, while the sum is 47.

The square root of 137497943 is about 11725.9516884558. The cubic root of 137497943 is about 516.1374838969.

The spelling of 137497943 in words is "one hundred thirty-seven million, four hundred ninety-seven thousand, nine hundred forty-three".