42219390 has 32 divisors (see below), whose sum is σ = 101730816. Its totient is φ = 11213600.

The previous prime is 42219383. The next prime is 42219403. The reversal of 42219390 is 9391224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5215 + ... + 10565.

It is an arithmetic number, because the mean of its divisors is an integer number (3179088).

Almost surely, 2^42219390 is an apocalyptic number.

42219390 is an abundant number, since it is smaller than the sum of its proper divisors (59511426).

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

42219390 is a wasteful number, since it uses less digits than its factorization.

42219390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5624.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 42219390 is about 6497.6449579829. The cubic root of 42219390 is about 348.2068561428.

The spelling of 42219390 in words is "forty-two million, two hundred nineteen thousand, three hundred ninety".