642442241415 has 32 divisors (see below), whose sum is σ = 1111811440320. Its totient is φ = 314898103296.

The previous prime is 642442241407. The next prime is 642442241423. The reversal of 642442241415 is 514142244246.

It is an interprime number because it is at equal distance from previous prime (642442241407) and next prime (642442241423).

It is not a de Polignac number, because 642442241415 - 2³ = 642442241407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7148742 + ... + 7238051.

It is an arithmetic number, because the mean of its divisors is an integer number (34744107510).

Almost surely, 2^642442241415 is an apocalyptic number.

642442241415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

642442241415 is a deficient number, since it is larger than the sum of its proper divisors (469369198905).

642442241415 is a wasteful number, since it uses less digits than its factorization.

642442241415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14387043.

The product of its digits is 245760, while the sum is 39.

The spelling of 642442241415 in words is "six hundred forty-two billion, four hundred forty-two million, two hundred forty-one thousand, four hundred fifteen".