137420357 has 8 divisors (see below), whose sum is σ = 142483800. Its totient is φ = 132378624.

The previous prime is 137420351. The next prime is 137420399. The reversal of 137420357 is 753024731.

It can be written as a sum of positive squares in 4 ways, for example, as 14853316 + 122567041 = 3854^2 + 11071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137420357 - 2⁴ = 137420341 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 (137420351) 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, 8069 + ... + 18437.

It is an arithmetic number, because the mean of its divisors is an integer number (17810475).

Almost surely, 2^137420357 is an apocalyptic number.

It is an amenable number.

137420357 is a deficient number, since it is larger than the sum of its proper divisors (5063443).

137420357 is a wasteful number, since it uses less digits than its factorization.

137420357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10855.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 137420357 is about 11722.6429187278. The cubic root of 137420357 is about 516.0403852873.

The spelling of 137420357 in words is "one hundred thirty-seven million, four hundred twenty thousand, three hundred fifty-seven".