2152421403 has 64 divisors (see below), whose sum is σ = 3413491200. Its totient is φ = 1192320000.

The previous prime is 2152421399. The next prime is 2152421407. The reversal of 2152421403 is 3041242512.

It is an interprime number because it is at equal distance from previous prime (2152421399) and next prime (2152421407).

It is not a de Polignac number, because 2152421403 - 2² = 2152421399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152421407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2595993 + ... + 2596821.

It is an arithmetic number, because the mean of its divisors is an integer number (53335800).

Almost surely, 2^2152421403 is an apocalyptic number.

2152421403 is a deficient number, since it is larger than the sum of its proper divisors (1261069797).

2152421403 is a wasteful number, since it uses less digits than its factorization.

2152421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2152421403 is about 46394.1957899908. The cubic root of 2152421403 is about 1291.1472283428.

Adding to 2152421403 its reverse (3041242512), we get a palindrome (5193663915).

The spelling of 2152421403 in words is "two billion, one hundred fifty-two million, four hundred twenty-one thousand, four hundred three".