42020455 has 8 divisors (see below), whose sum is σ = 50459472. Its totient is φ = 33593088.

The previous prime is 42020441. The next prime is 42020483. The reversal of 42020455 is 55402024.

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

It is a cyclic number.

It is not a de Polignac number, because 42020455 - 2²³ = 33631847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11704 + ... + 14866.

It is an arithmetic number, because the mean of its divisors is an integer number (6307434).

Almost surely, 2^42020455 is an apocalyptic number.

42020455 is a deficient number, since it is larger than the sum of its proper divisors (8439017).

42020455 is a wasteful number, since it uses less digits than its factorization.

42020455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42020455 is about 6482.3186438187. The cubic root of 42020455 is about 347.6590855881.

Adding to 42020455 its reverse (55402024), we get a palindrome (97422479).

The spelling of 42020455 in words is "forty-two million, twenty thousand, four hundred fifty-five".