1515142730 has 8 divisors (see below), whose sum is σ = 2727256932. Its totient is φ = 606057088.

The previous prime is 1515142723. The next prime is 1515142753. The reversal of 1515142730 is 372415151.

It can be written as a sum of positive squares in 2 ways, for example, as 1271564281 + 243578449 = 35659^2 + 15607^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1515142693 and 1515142702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75757127 + ... + 75757146.

Almost surely, 2^1515142730 is an apocalyptic number.

1515142730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1515142730 is a deficient number, since it is larger than the sum of its proper divisors (1212114202).

1515142730 is a wasteful number, since it uses less digits than its factorization.

1515142730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151514280.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1515142730 is about 38924.8343605981. The cubic root of 1515142730 is about 1148.5533744485.

Adding to 1515142730 its reverse (372415151), we get a palindrome (1887557881).

The spelling of 1515142730 in words is "one billion, five hundred fifteen million, one hundred forty-two thousand, seven hundred thirty".