15202420401 has 8 divisors (see below), whose sum is σ = 23165593024. Its totient is φ = 8687097360.

The previous prime is 15202420393. The next prime is 15202420433. The reversal of 15202420401 is 10402420251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15202420401 - 2³ = 15202420393 is a prime.

It is a super-2 number, since 2×15202420401² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 723924781 = 15202420401 / (1 + 5 + 2 + 0 + 2 + 4 + 2 + 0 + 4 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (15202430401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361962370 + ... + 361962411.

It is an arithmetic number, because the mean of its divisors is an integer number (2895699128).

Almost surely, 2^15202420401 is an apocalyptic number.

It is an amenable number.

15202420401 is a deficient number, since it is larger than the sum of its proper divisors (7963172623).

15202420401 is an equidigital number, since it uses as much as digits as its factorization.

15202420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723924791.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 15202420401 its reverse (10402420251), we get a palindrome (25604840652).

The spelling of 15202420401 in words is "fifteen billion, two hundred two million, four hundred twenty thousand, four hundred one".