123572747 has 4 divisors (see below), whose sum is σ = 124019136. Its totient is φ = 123126360.

The previous prime is 123572717. The next prime is 123572759. The reversal of 123572747 is 747275321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123572747 - 2¹² = 123568651 is a prime.

It is a super-2 number, since 2×123572747² = 30540447602252018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123572747.

It is not an unprimeable number, because it can be changed into a prime (123572707) 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, 222779 + ... + 223332.

It is an arithmetic number, because the mean of its divisors is an integer number (31004784).

Almost surely, 2^123572747 is an apocalyptic number.

123572747 is a deficient number, since it is larger than the sum of its proper divisors (446389).

123572747 is an equidigital number, since it uses as much as digits as its factorization.

123572747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446388.

The product of its digits is 82320, while the sum is 38.

The square root of 123572747 is about 11116.3279458641. The cubic root of 123572747 is about 498.0897068550.

The spelling of 123572747 in words is "one hundred twenty-three million, five hundred seventy-two thousand, seven hundred forty-seven".