42745422 has 16 divisors (see below), whose sum is σ = 86338512. Its totient is φ = 14107200.

The previous prime is 42745357. The next prime is 42745433. The reversal of 42745422 is 22454724.

42745422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42745422² = 3654342203916168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42745422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34663 + ... + 35874.

It is an arithmetic number, because the mean of its divisors is an integer number (5396157).

Almost surely, 2^42745422 is an apocalyptic number.

42745422 is an abundant number, since it is smaller than the sum of its proper divisors (43593090).

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

42745422 is a wasteful number, since it uses less digits than its factorization.

42745422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70643.

The product of its digits is 17920, while the sum is 30.

The square root of 42745422 is about 6537.9983175281. The cubic root of 42745422 is about 349.6470509995.

The spelling of 42745422 in words is "forty-two million, seven hundred forty-five thousand, four hundred twenty-two".