642442241416 has 8 divisors (see below), whose sum is σ = 1204579202670. Its totient is φ = 321221120704.

The previous prime is 642442241407. The next prime is 642442241423. The reversal of 642442241416 is 614142244246.

It can be written as a sum of positive squares in only one way, i.e., 589747202500 + 52695038916 = 767950^2 + 229554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×642442241416² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40152640081 + ... + 40152640096.

Almost surely, 2^642442241416 is an apocalyptic number.

It is an amenable number.

642442241416 is a deficient number, since it is larger than the sum of its proper divisors (562136961254).

642442241416 is a wasteful number, since it uses less digits than its factorization.

642442241416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80305280183 (or 80305280179 counting only the distinct ones).

The product of its digits is 294912, while the sum is 40.

The spelling of 642442241416 in words is "six hundred forty-two billion, four hundred forty-two million, two hundred forty-one thousand, four hundred sixteen".