123451001 has 4 divisors (see below), whose sum is σ = 123488400. Its totient is φ = 123413604.

The previous prime is 123450997. The next prime is 123451049. The reversal of 123451001 is 100154321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123451001 - 2² = 123450997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123451301) 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, 13211 + ... + 20528.

It is an arithmetic number, because the mean of its divisors is an integer number (30872100).

Almost surely, 2^123451001 is an apocalyptic number.

It is an amenable number.

123451001 is a deficient number, since it is larger than the sum of its proper divisors (37399).

123451001 is an equidigital number, since it uses as much as digits as its factorization.

123451001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37398.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 123451001 is about 11110.8505975015. The cubic root of 123451001 is about 497.9260775853.

The spelling of 123451001 in words is "one hundred twenty-three million, four hundred fifty-one thousand, one".