42455502 has 56 divisors (see below), whose sum is σ = 98186376. Its totient is φ = 13751856.

The previous prime is 42455489. The next prime is 42455503. The reversal of 42455502 is 20555424.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455503) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 53553 + ... + 54339.

Almost surely, 2^42455502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42455502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49093188).

42455502 is an abundant number, since it is smaller than the sum of its proper divisors (55730874).

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

42455502 is an equidigital number, since it uses as much as digits as its factorization.

42455502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 42455502 is about 6515.7886706062. The cubic root of 42455502 is about 348.8547656113.

The spelling of 42455502 in words is "forty-two million, four hundred fifty-five thousand, five hundred two".