1156537042 has 8 divisors (see below), whose sum is σ = 1736020476. Its totient is φ = 577863552.

The previous prime is 1156537027. The next prime is 1156537051. The reversal of 1156537042 is 2407356511.

It can be written as a sum of positive squares in 2 ways, for example, as 994203961 + 162333081 = 31531^2 + 12741^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1156536989 and 1156537007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198903 + ... + 204634.

Almost surely, 2^1156537042 is an apocalyptic number.

1156537042 is a deficient number, since it is larger than the sum of its proper divisors (579483434).

1156537042 is a wasteful number, since it uses less digits than its factorization.

1156537042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404972.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1156537042 is about 34007.8967594293. The cubic root of 1156537042 is about 1049.6709602401.

The spelling of 1156537042 in words is "one billion, one hundred fifty-six million, five hundred thirty-seven thousand, forty-two".