42442455 has 32 divisors (see below), whose sum is σ = 78444288. Its totient is φ = 19366400.

The previous prime is 42442427. The next prime is 42442469. The reversal of 42442455 is 55424424.

It is not a de Polignac number, because 42442455 - 2⁶ = 42442391 is a prime.

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, 4761 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (2451384).

Almost surely, 2^42442455 is an apocalyptic number.

42442455 is a deficient number, since it is larger than the sum of its proper divisors (36001833).

42442455 is a wasteful number, since it uses less digits than its factorization.

42442455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15167.

The product of its digits is 25600, while the sum is 30.

The square root of 42442455 is about 6514.7874101923. The cubic root of 42442455 is about 348.8190264316.

Adding to 42442455 its reverse (55424424), we get a palindrome (97866879).

The spelling of 42442455 in words is "forty-two million, four hundred forty-two thousand, four hundred fifty-five".