123451772 has 6 divisors (see below), whose sum is σ = 216040608. Its totient is φ = 61725884.

The previous prime is 123451771. The next prime is 123451781. The reversal of 123451772 is 277154321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123451771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15431468 + ... + 15431475.

It is an arithmetic number, because the mean of its divisors is an integer number (36006768).

Almost surely, 2^123451772 is an apocalyptic number.

It is an amenable number.

123451772 is a deficient number, since it is larger than the sum of its proper divisors (92588836).

123451772 is a wasteful number, since it uses less digits than its factorization.

123451772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30862947 (or 30862945 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 123451772 is about 11110.8852932608. The cubic root of 123451772 is about 497.9271141645.

The spelling of 123451772 in words is "one hundred twenty-three million, four hundred fifty-one thousand, seven hundred seventy-two".