42194931 has 8 divisors (see below), whose sum is σ = 56474880. Its totient is φ = 28022472.

The previous prime is 42194921. The next prime is 42194983. The reversal of 42194931 is 13949124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42194931 - 2⁵ = 42194899 is a prime.

It is a super-2 number, since 2×42194931² = 3560824404189522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42194892 and 42194901.

It is not an unprimeable number, because it can be changed into a prime (42194921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25951 + ... + 27528.

It is an arithmetic number, because the mean of its divisors is an integer number (7059360).

Almost surely, 2^42194931 is an apocalyptic number.

42194931 is a deficient number, since it is larger than the sum of its proper divisors (14279949).

42194931 is a wasteful number, since it uses less digits than its factorization.

42194931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53745.

The product of its digits is 7776, while the sum is 33.

The square root of 42194931 is about 6495.7625418422. The cubic root of 42194931 is about 348.1396008153.

The spelling of 42194931 in words is "forty-two million, one hundred ninety-four thousand, nine hundred thirty-one".