1156742455 has 24 divisors (see below), whose sum is σ = 1527965712. Its totient is φ = 840048000.

The previous prime is 1156742453. The next prime is 1156742479. The reversal of 1156742455 is 5542476511.

It is not a de Polignac number, because 1156742455 - 2¹ = 1156742453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156742453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780315 + ... + 781795.

It is an arithmetic number, because the mean of its divisors is an integer number (63665238).

Almost surely, 2^1156742455 is an apocalyptic number.

1156742455 is a deficient number, since it is larger than the sum of its proper divisors (371223257).

1156742455 is a wasteful number, since it uses less digits than its factorization.

1156742455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2788 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 1156742455 is about 34010.9167033175. The cubic root of 1156742455 is about 1049.7331007190.

The spelling of 1156742455 in words is "one billion, one hundred fifty-six million, seven hundred forty-two thousand, four hundred fifty-five".