157287429 has 12 divisors (see below), whose sum is σ = 244669516. Its totient is φ = 96792192.

The previous prime is 157287379. The next prime is 157287433. The reversal of 157287429 is 924782751.

It is a happy number.

157287429 is a `hidden beast` number, since 1 + 572 + 8 + 74 + 2 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73564929 + 83722500 = 8577^2 + 9150^2 .

It is not a de Polignac number, because 157287429 - 2⁹ = 157286917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157280429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672052 + ... + 672285.

Almost surely, 2^157287429 is an apocalyptic number.

It is an amenable number.

157287429 is a deficient number, since it is larger than the sum of its proper divisors (87382087).

157287429 is a wasteful number, since it uses less digits than its factorization.

157287429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344356 (or 1344353 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 157287429 is about 12541.4285071518. The cubic root of 157287429 is about 539.7980829447.

The spelling of 157287429 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, four hundred twenty-nine".