42274551 has 8 divisors (see below), whose sum is σ = 61490304. Its totient is φ = 25620920.

The previous prime is 42274537. The next prime is 42274553. The reversal of 42274551 is 15547224.

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 42274551 - 2⁷ = 42274423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42274553) 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, 640491 + ... + 640556.

It is an arithmetic number, because the mean of its divisors is an integer number (7686288).

Almost surely, 2^42274551 is an apocalyptic number.

42274551 is a deficient number, since it is larger than the sum of its proper divisors (19215753).

42274551 is a wasteful number, since it uses less digits than its factorization.

42274551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281061.

The product of its digits is 11200, while the sum is 30.

The square root of 42274551 is about 6501.8882641891. Note that the first 3 decimals coincide. The cubic root of 42274551 is about 348.3584379903.

It can be divided in two parts, 4227 and 4551, that added together give a palindrome (8778).

The spelling of 42274551 in words is "forty-two million, two hundred seventy-four thousand, five hundred fifty-one".