7131242136 has 16 divisors (see below), whose sum is σ = 17828105400. Its totient is φ = 2377080704.

The previous prime is 7131242021. The next prime is 7131242137. The reversal of 7131242136 is 6312421317.

It is a happy number.

It is a super-2 number, since 2×7131242136² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131242137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148567521 + ... + 148567568.

Almost surely, 2^7131242136 is an apocalyptic number.

It is an amenable number.

7131242136 is an abundant number, since it is smaller than the sum of its proper divisors (10696863264).

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

7131242136 is a wasteful number, since it uses less digits than its factorization.

7131242136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297135098 (or 297135094 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 7131242136 is about 84446.6822083615. The cubic root of 7131242136 is about 1924.8123400355.

The spelling of 7131242136 in words is "seven billion, one hundred thirty-one million, two hundred forty-two thousand, one hundred thirty-six".