1171264542 has 24 divisors (see below), whose sum is σ = 2724983496. Its totient is φ = 334646928.

The previous prime is 1171264541. The next prime is 1171264547. The reversal of 1171264542 is 2454621711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171264541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1991653 + ... + 1992240.

It is an arithmetic number, because the mean of its divisors is an integer number (113540979).

Almost surely, 2^1171264542 is an apocalyptic number.

1171264542 is an abundant number, since it is smaller than the sum of its proper divisors (1553718954).

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

1171264542 is a wasteful number, since it uses less digits than its factorization.

1171264542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983912 (or 3983905 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1171264542 is about 34223.7423728031. The cubic root of 1171264542 is about 1054.1077313078.

The spelling of 1171264542 in words is "one billion, one hundred seventy-one million, two hundred sixty-four thousand, five hundred forty-two".