137999101 has 2 divisors, whose sum is σ = 137999102. Its totient is φ = 137999100.

The previous prime is 137999093. The next prime is 137999117. The reversal of 137999101 is 101999731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93122500 + 44876601 = 9650^2 + 6699^2 .

It is a cyclic number.

It is not a de Polignac number, because 137999101 - 2³ = 137999093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137999131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68999550 + 68999551.

It is an arithmetic number, because the mean of its divisors is an integer number (68999551).

Almost surely, 2^137999101 is an apocalyptic number.

It is an amenable number.

137999101 is a deficient number, since it is larger than the sum of its proper divisors (1).

137999101 is an equidigital number, since it uses as much as digits as its factorization.

137999101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309, while the sum is 40.

The square root of 137999101 is about 11747.3018604274. The cubic root of 137999101 is about 516.7638030801.

The spelling of 137999101 in words is "one hundred thirty-seven million, nine hundred ninety-nine thousand, one hundred one".