1156742157 has 8 divisors (see below), whose sum is σ = 1546620480. Its totient is φ = 769012640.

The previous prime is 1156742123. The next prime is 1156742179. The reversal of 1156742157 is 7512476511.

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-1156742157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156742107) 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, 535944 + ... + 538097.

It is an arithmetic number, because the mean of its divisors is an integer number (193327560).

Almost surely, 2^1156742157 is an apocalyptic number.

It is an amenable number.

1156742157 is a deficient number, since it is larger than the sum of its proper divisors (389878323).

1156742157 is a wasteful number, since it uses less digits than its factorization.

1156742157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074403.

The product of its digits is 58800, while the sum is 39.

The square root of 1156742157 is about 34010.9123223709. The cubic root of 1156742157 is about 1049.7330105749.

The spelling of 1156742157 in words is "one billion, one hundred fifty-six million, seven hundred forty-two thousand, one hundred fifty-seven".