42392187 has 8 divisors (see below), whose sum is σ = 62803280. Its totient is φ = 28261440.

The previous prime is 42392179. The next prime is 42392263. The reversal of 42392187 is 78129324.

It is not a de Polignac number, because 42392187 - 2³ = 42392179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42392117) 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, 785014 + ... + 785067.

It is an arithmetic number, because the mean of its divisors is an integer number (7850410).

Almost surely, 2^42392187 is an apocalyptic number.

42392187 is a deficient number, since it is larger than the sum of its proper divisors (20411093).

42392187 is a wasteful number, since it uses less digits than its factorization.

42392187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570090 (or 1570084 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42392187 is about 6510.9282748315. The cubic root of 42392187 is about 348.6812605879.

The spelling of 42392187 in words is "forty-two million, three hundred ninety-two thousand, one hundred eighty-seven".