137429531 has 4 divisors (see below), whose sum is σ = 143404752. Its totient is φ = 131454312.

The previous prime is 137429519. The next prime is 137429533. The reversal of 137429531 is 135924731.

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 137429531 - 2¹⁰ = 137428507 is a prime.

It is a super-2 number, since 2×137429531² = 37773751981759922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137429491 and 137429500.

It is not an unprimeable number, because it can be changed into a prime (137429533) 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, 2987576 + ... + 2987621.

It is an arithmetic number, because the mean of its divisors is an integer number (35851188).

Almost surely, 2^137429531 is an apocalyptic number.

137429531 is a deficient number, since it is larger than the sum of its proper divisors (5975221).

137429531 is an equidigital number, since it uses as much as digits as its factorization.

137429531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975220.

The product of its digits is 22680, while the sum is 35.

The square root of 137429531 is about 11723.0342062113. The cubic root of 137429531 is about 516.0518684214.

The spelling of 137429531 in words is "one hundred thirty-seven million, four hundred twenty-nine thousand, five hundred thirty-one".