42849279 has 24 divisors (see below), whose sum is σ = 67813200. Its totient is φ = 25856640.

The previous prime is 42849251. The next prime is 42849283. The reversal of 42849279 is 97294824.

It is not a de Polignac number, because 42849279 - 2⁷ = 42849151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42849229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25827 + ... + 27435.

It is an arithmetic number, because the mean of its divisors is an integer number (2825550).

Almost surely, 2^42849279 is an apocalyptic number.

42849279 is a deficient number, since it is larger than the sum of its proper divisors (24963921).

42849279 is a wasteful number, since it uses less digits than its factorization.

42849279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895 (or 1892 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 42849279 is about 6545.9360675155. The cubic root of 42849279 is about 349.9299968840.

The spelling of 42849279 in words is "forty-two million, eight hundred forty-nine thousand, two hundred seventy-nine".