1242447516215 has 8 divisors (see below), whose sum is σ = 1491074359008. Its totient is φ = 993866453280.

The previous prime is 1242447516157. The next prime is 1242447516217. The reversal of 1242447516215 is 5126157442421.

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

It is not a de Polignac number, because 1242447516215 - 2⁶ = 1242447516151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242447516217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11385227 + ... + 11493836.

It is an arithmetic number, because the mean of its divisors is an integer number (186384294876).

Almost surely, 2^{1242447516215} is an apocalyptic number.

1242447516215 is a deficient number, since it is larger than the sum of its proper divisors (248626842793).

1242447516215 is a wasteful number, since it uses less digits than its factorization.

1242447516215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22889929.

The product of its digits is 537600, while the sum is 44.

The spelling of 1242447516215 in words is "one trillion, two hundred forty-two billion, four hundred forty-seven million, five hundred sixteen thousand, two hundred fifteen".