42868451 has 4 divisors (see below), whose sum is σ = 43472304. Its totient is φ = 42264600.

The previous prime is 42868439. The next prime is 42868499. The reversal of 42868451 is 15486824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42868451 - 2⁶ = 42868387 is a prime.

It is a super-2 number, since 2×42868451² = 3675408182278802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42868051) 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, 301820 + ... + 301961.

It is an arithmetic number, because the mean of its divisors is an integer number (10868076).

Almost surely, 2^42868451 is an apocalyptic number.

42868451 is a deficient number, since it is larger than the sum of its proper divisors (603853).

42868451 is an equidigital number, since it uses as much as digits as its factorization.

42868451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603852.

The product of its digits is 61440, while the sum is 38.

The square root of 42868451 is about 6547.4003237926. The cubic root of 42868451 is about 349.9821786844.

The spelling of 42868451 in words is "forty-two million, eight hundred sixty-eight thousand, four hundred fifty-one".