1500123401 has 16 divisors (see below), whose sum is σ = 1816327296. Its totient is φ = 1209482496.

The previous prime is 1500123389. The next prime is 1500123419. The reversal of 1500123401 is 1043210051.

It is a cyclic number.

It is not a de Polignac number, because 1500123401 - 2¹⁴ = 1500107017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1500123401.

It is not an unprimeable number, because it can be changed into a prime (1500123431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330590 + ... + 335096.

It is an arithmetic number, because the mean of its divisors is an integer number (113520456).

Almost surely, 2^1500123401 is an apocalyptic number.

It is an amenable number.

1500123401 is a deficient number, since it is larger than the sum of its proper divisors (316203895).

1500123401 is a wasteful number, since it uses less digits than its factorization.

1500123401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328.

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

The square root of 1500123401 is about 38731.4265293702. The cubic root of 1500123401 is about 1144.7456325553.

Adding to 1500123401 its reverse (1043210051), we get a palindrome (2543333452).

The spelling of 1500123401 in words is "one billion, five hundred million, one hundred twenty-three thousand, four hundred one".