137999429 has 8 divisors (see below), whose sum is σ = 143393760. Its totient is φ = 132647536.

The previous prime is 137999423. The next prime is 137999437. The reversal of 137999429 is 924999731.

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 137999429 - 2¹⁶ = 137933893 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 (137999423) 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, 3899 + ... + 17064.

It is an arithmetic number, because the mean of its divisors is an integer number (17924220).

Almost surely, 2^137999429 is an apocalyptic number.

It is an amenable number.

137999429 is a deficient number, since it is larger than the sum of its proper divisors (5394331).

137999429 is a wasteful number, since it uses less digits than its factorization.

137999429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21219.

The product of its digits is 1102248, while the sum is 53.

The square root of 137999429 is about 11747.3158210716. The cubic root of 137999429 is about 516.7642124992.

The spelling of 137999429 in words is "one hundred thirty-seven million, nine hundred ninety-nine thousand, four hundred twenty-nine".