157742473 has 8 divisors (see below), whose sum is σ = 190881792. Its totient is φ = 127254336.

The previous prime is 157742461. The next prime is 157742489. The reversal of 157742473 is 374247751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157742473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157742173) 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, 662665 + ... + 662902.

It is an arithmetic number, because the mean of its divisors is an integer number (23860224).

Almost surely, 2^157742473 is an apocalyptic number.

It is an amenable number.

157742473 is a deficient number, since it is larger than the sum of its proper divisors (33139319).

157742473 is a wasteful number, since it uses less digits than its factorization.

157742473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325591.

The product of its digits is 164640, while the sum is 40.

The square root of 157742473 is about 12559.5570383672. The cubic root of 157742473 is about 540.3181401492.

The spelling of 157742473 in words is "one hundred fifty-seven million, seven hundred forty-two thousand, four hundred seventy-three".