455021442 has 64 divisors (see below), whose sum is σ = 1043496960. Its totient is φ = 146884752.

The previous prime is 455021423. The next prime is 455021453. The reversal of 455021442 is 244120554.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 294123 + ... + 295665.

It is an arithmetic number, because the mean of its divisors is an integer number (16304640).

Almost surely, 2^455021442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455021442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521748480).

455021442 is an abundant number, since it is smaller than the sum of its proper divisors (588475518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

455021442 is a wasteful number, since it uses less digits than its factorization.

455021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 455021442 is about 21331.2316100126. The cubic root of 455021442 is about 769.1492498418.

Adding to 455021442 its reverse (244120554), we get a palindrome (699141996).

The spelling of 455021442 in words is "four hundred fifty-five million, twenty-one thousand, four hundred forty-two".