137729123 has 8 divisors (see below), whose sum is σ = 158538240. Its totient is φ = 117203400.

The previous prime is 137729099. The next prime is 137729159. The reversal of 137729123 is 321927731.

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 137729123 - 2¹⁴ = 137712739 is a prime.

It is a super-2 number, since 2×137729123² = 37938622644698258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137729183) 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, 69803 + ... + 71748.

It is an arithmetic number, because the mean of its divisors is an integer number (19817280).

Almost surely, 2^137729123 is an apocalyptic number.

137729123 is a deficient number, since it is larger than the sum of its proper divisors (20809117).

137729123 is a wasteful number, since it uses less digits than its factorization.

137729123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141697.

The product of its digits is 15876, while the sum is 35.

The square root of 137729123 is about 11735.8051705028. The cubic root of 137729123 is about 516.4265884723.

The spelling of 137729123 in words is "one hundred thirty-seven million, seven hundred twenty-nine thousand, one hundred twenty-three".