123401151 has 20 divisors (see below), whose sum is σ = 184639224. Its totient is φ = 82134000.

The previous prime is 123401149. The next prime is 123401153. The reversal of 123401151 is 151104321.

It is an interprime number because it is at equal distance from previous prime (123401149) and next prime (123401153).

It is not a de Polignac number, because 123401151 - 2¹ = 123401149 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123401153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 94201 + ... + 95501.

Almost surely, 2^123401151 is an apocalyptic number.

123401151 is the 7026-th heptagonal number.

123401151 is a deficient number, since it is larger than the sum of its proper divisors (61238073).

123401151 is a wasteful number, since it uses less digits than its factorization.

123401151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 123401151 is about 11108.6070683952. The cubic root of 123401151 is about 497.8590470589.

Adding to 123401151 its reverse (151104321), we get a palindrome (274505472).

The spelling of 123401151 in words is "one hundred twenty-three million, four hundred one thousand, one hundred fifty-one".