101515231042 has 8 divisors (see below), whose sum is σ = 152278160076. Its totient is φ = 50755844352.

The previous prime is 101515231021. The next prime is 101515231049. The reversal of 101515231042 is 240132515101.

It can be written as a sum of positive squares in 2 ways, for example, as 98728552521 + 2786678521 = 314211^2 + 52789^2 .

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 = 101515230998 and 101515231016.

It is not an unprimeable number, because it can be changed into a prime (101515231049) 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, 812743 + ... + 929290.

Almost surely, 2^101515231042 is an apocalyptic number.

101515231042 is a deficient number, since it is larger than the sum of its proper divisors (50762929034).

101515231042 is a wasteful number, since it uses less digits than its factorization.

101515231042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771172.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 101515231042 its reverse (240132515101), we get a palindrome (341647746143).

The spelling of 101515231042 in words is "one hundred one billion, five hundred fifteen million, two hundred thirty-one thousand, forty-two".