1172989242 has 32 divisors (see below), whose sum is σ = 2609323200. Its totient is φ = 390594384.

The previous prime is 1172989229. The next prime is 1172989249. The reversal of 1172989242 is 2429892711.

1172989242 is a `hidden beast` number, since 117 + 298 + 9 + 242 = 666.

It is not an unprimeable number, because it can be changed into a prime (1172989249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44368 + ... + 65684.

It is an arithmetic number, because the mean of its divisors is an integer number (81541350).

Almost surely, 2^1172989242 is an apocalyptic number.

1172989242 is an abundant number, since it is smaller than the sum of its proper divisors (1436333958).

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

1172989242 is a wasteful number, since it uses less digits than its factorization.

1172989242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22347 (or 22341 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1172989242 is about 34248.9305234485. The cubic root of 1172989242 is about 1054.6248726585.

The spelling of 1172989242 in words is "one billion, one hundred seventy-two million, nine hundred eighty-nine thousand, two hundred forty-two".