42272787 has 8 divisors (see below), whose sum is σ = 57563136. Its totient is φ = 27582152.

The previous prime is 42272771. The next prime is 42272801. The reversal of 42272787 is 78727224.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42272787 - 2⁴ = 42272771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42272687) 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, 149763 + ... + 150044.

It is an arithmetic number, because the mean of its divisors is an integer number (7195392).

Almost surely, 2^42272787 is an apocalyptic number.

42272787 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

42272787 is a deficient number, since it is larger than the sum of its proper divisors (15290349).

42272787 is a wasteful number, since it uses less digits than its factorization.

42272787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299857.

The product of its digits is 87808, while the sum is 39.

The square root of 42272787 is about 6501.7526098737. The cubic root of 42272787 is about 348.3535925784.

The spelling of 42272787 in words is "forty-two million, two hundred seventy-two thousand, seven hundred eighty-seven".