42254451 has 6 divisors (see below), whose sum is σ = 61034220. Its totient is φ = 28169628.

The previous prime is 42254449. The next prime is 42254489. The reversal of 42254451 is 15445224.

It is not a de Polignac number, because 42254451 - 2¹ = 42254449 is a prime.

It is a super-2 number, since 2×42254451² = 3570877258622802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42254491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2347461 + ... + 2347478.

It is an arithmetic number, because the mean of its divisors is an integer number (10172370).

Almost surely, 2^42254451 is an apocalyptic number.

42254451 is a deficient number, since it is larger than the sum of its proper divisors (18779769).

42254451 is a wasteful number, since it uses less digits than its factorization.

42254451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694945 (or 4694942 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 42254451 is about 6500.3423755984. The cubic root of 42254451 is about 348.3032186802.

Adding to 42254451 its reverse (15445224), we get a palindrome (57699675).

The spelling of 42254451 in words is "forty-two million, two hundred fifty-four thousand, four hundred fifty-one".