1501204123 has 2 divisors, whose sum is σ = 1501204124. Its totient is φ = 1501204122.

The previous prime is 1501204097. The next prime is 1501204139. The reversal of 1501204123 is 3214021051.

It is a strong prime.

It is an emirp because it is prime and its reverse (3214021051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1501204123 - 2¹⁷ = 1501073051 is a prime.

It is a super-2 number, since 2×1501204123² = 4507227637824398258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1501204123.

It is not a weakly prime, because it can be changed into another prime (1501204223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750602061 + 750602062.

It is an arithmetic number, because the mean of its divisors is an integer number (750602062).

Almost surely, 2^1501204123 is an apocalyptic number.

1501204123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501204123 is an equidigital number, since it uses as much as digits as its factorization.

1501204123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1501204123 is about 38745.3755046973. The cubic root of 1501204123 is about 1145.0204665716.

Adding to 1501204123 its reverse (3214021051), we get a palindrome (4715225174).

The spelling of 1501204123 in words is "one billion, five hundred one million, two hundred four thousand, one hundred twenty-three".