442100408 has 16 divisors (see below), whose sum is σ = 830326560. Its totient is φ = 220680000.

The previous prime is 442100381. The next prime is 442100441. The reversal of 442100408 is 804001244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41168 + ... + 50783.

It is an arithmetic number, because the mean of its divisors is an integer number (51895410).

Almost surely, 2^442100408 is an apocalyptic number.

It is an amenable number.

442100408 is a deficient number, since it is larger than the sum of its proper divisors (388226152).

442100408 is a wasteful number, since it uses less digits than its factorization.

442100408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92558 (or 92554 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 442100408 is about 21026.1838667886. The cubic root of 442100408 is about 761.7988368670.

The spelling of 442100408 in words is "four hundred forty-two million, one hundred thousand, four hundred eight".