42774231 has 4 divisors (see below), whose sum is σ = 57032312. Its totient is φ = 28516152.

The previous prime is 42774209. The next prime is 42774253. The reversal of 42774231 is 13247724.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42774209) and next prime (42774253).

It is not a de Polignac number, because 42774231 - 2⁹ = 42773719 is a prime.

It is a super-2 number, since 2×42774231² = 3659269675282722, 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 (42774271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7129036 + ... + 7129041.

It is an arithmetic number, because the mean of its divisors is an integer number (14258078).

Almost surely, 2^42774231 is an apocalyptic number.

42774231 is a deficient number, since it is larger than the sum of its proper divisors (14258081).

42774231 is a wasteful number, since it uses less digits than its factorization.

42774231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14258080.

The product of its digits is 9408, while the sum is 30.

The square root of 42774231 is about 6540.2011436958. The cubic root of 42774231 is about 349.7255835403.

The spelling of 42774231 in words is "forty-two million, seven hundred seventy-four thousand, two hundred thirty-one".