515192742 has 12 divisors (see below), whose sum is σ = 1116250980. Its totient is φ = 171730908.

The previous prime is 515192729. The next prime is 515192749. The reversal of 515192742 is 247291515.

It is a super-2 number, since 2×515192742² = 530847122818957128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515192697 and 515192706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515192749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14310892 + ... + 14310927.

It is an arithmetic number, because the mean of its divisors is an integer number (93020915).

Almost surely, 2^515192742 is an apocalyptic number.

515192742 is an abundant number, since it is smaller than the sum of its proper divisors (601058238).

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

515192742 is a wasteful number, since it uses less digits than its factorization.

515192742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28621827 (or 28621824 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 515192742 is about 22697.8576522103. The cubic root of 515192742 is about 801.6594418940.

The spelling of 515192742 in words is "five hundred fifteen million, one hundred ninety-two thousand, seven hundred forty-two".