42194556 has 36 divisors (see below), whose sum is σ = 107010904. Its totient is φ = 14018400.

The previous prime is 42194549. The next prime is 42194563. The reversal of 42194556 is 65549124.

It is an interprime number because it is at equal distance from previous prime (42194549) and next prime (42194563).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42194556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10146 + ... + 13686.

Almost surely, 2^42194556 is an apocalyptic number.

It is an amenable number.

42194556 is an abundant number, since it is smaller than the sum of its proper divisors (64816348).

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

42194556 is a wasteful number, since it uses less digits than its factorization.

42194556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882 (or 3877 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 42194556 is about 6495.7336768066. The cubic root of 42194556 is about 348.1385694691.

The spelling of 42194556 in words is "forty-two million, one hundred ninety-four thousand, five hundred fifty-six".