5130138402 has 40 divisors (see below), whose sum is σ = 11521075500. Its totient is φ = 1706213376.

The previous prime is 5130138401. The next prime is 5130138421. The reversal of 5130138402 is 2048310315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5094961641 + 35176761 = 71379^2 + 5931^2 .

It is a super-2 number, since 2×5130138402² = 52636640047350227208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5130138401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37474 + ... + 108002.

Almost surely, 2^5130138402 is an apocalyptic number.

5130138402 is an abundant number, since it is smaller than the sum of its proper divisors (6390937098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5130138402 is a wasteful number, since it uses less digits than its factorization.

5130138402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70992 (or 70983 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 5130138402 is about 71624.9844816737. The cubic root of 5130138402 is about 1724.6846334631.

Adding to 5130138402 its reverse (2048310315), we get a palindrome (7178448717).

The spelling of 5130138402 in words is "five billion, one hundred thirty million, one hundred thirty-eight thousand, four hundred two".