42194151 has 6 divisors (see below), whose sum is σ = 60947120. Its totient is φ = 28129428.

The previous prime is 42194143. The next prime is 42194161. The reversal of 42194151 is 15149124.

42194151 is a `hidden beast` number, since 421 + 94 + 151 = 666.

It is not a de Polignac number, because 42194151 - 2³ = 42194143 is a prime.

It is a super-2 number, since 2×42194151² = 3560692757221602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42194111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2344111 + ... + 2344128.

Almost surely, 2^42194151 is an apocalyptic number.

42194151 is a deficient number, since it is larger than the sum of its proper divisors (18752969).

42194151 is a wasteful number, since it uses less digits than its factorization.

42194151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688245 (or 4688242 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 42194151 is about 6495.7025024242. The cubic root of 42194151 is about 348.1374556085.

The spelling of 42194151 in words is "forty-two million, one hundred ninety-four thousand, one hundred fifty-one".