1173421572 has 12 divisors (see below), whose sum is σ = 2737983696. Its totient is φ = 391140520.

The previous prime is 1173421541. The next prime is 1173421573. The reversal of 1173421572 is 2751243711.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1173421573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48892554 + ... + 48892577.

It is an arithmetic number, because the mean of its divisors is an integer number (228165308).

Almost surely, 2^1173421572 is an apocalyptic number.

1173421572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1173421572 is an abundant number, since it is smaller than the sum of its proper divisors (1564562124).

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

1173421572 is a wasteful number, since it uses less digits than its factorization.

1173421572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97785138 (or 97785136 counting only the distinct ones).

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

The square root of 1173421572 is about 34255.2415259329. The cubic root of 1173421572 is about 1054.7544248460.

The spelling of 1173421572 in words is "one billion, one hundred seventy-three million, four hundred twenty-one thousand, five hundred seventy-two".