1157312742 has 16 divisors (see below), whose sum is σ = 2337543792. Its totient is φ = 381951200.

The previous prime is 1157312729. The next prime is 1157312747. The reversal of 1157312742 is 2472137511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157312747) 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, 954273 + ... + 955484.

It is an arithmetic number, because the mean of its divisors is an integer number (146096487).

Almost surely, 2^1157312742 is an apocalyptic number.

1157312742 is an abundant number, since it is smaller than the sum of its proper divisors (1180231050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157312742 is a wasteful number, since it uses less digits than its factorization.

1157312742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909863.

The product of its digits is 11760, while the sum is 33.

The square root of 1157312742 is about 34019.2995518720. The cubic root of 1157312742 is about 1049.9055824398.

The spelling of 1157312742 in words is "one billion, one hundred fifty-seven million, three hundred twelve thousand, seven hundred forty-two".