42672401 has 4 divisors (see below), whose sum is σ = 42760512. Its totient is φ = 42584292.

The previous prime is 42672391. The next prime is 42672407. The reversal of 42672401 is 10427624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42672401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42672407) 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, 43325 + ... + 44298.

It is an arithmetic number, because the mean of its divisors is an integer number (10690128).

Almost surely, 2^42672401 is an apocalyptic number.

It is an amenable number.

42672401 is a deficient number, since it is larger than the sum of its proper divisors (88111).

42672401 is an equidigital number, since it uses as much as digits as its factorization.

42672401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88110.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42672401 is about 6532.4115761333. The cubic root of 42672401 is about 349.4478395732.

It can be divided in two parts, 426 and 72401, that added together give a palindrome (72827).

The spelling of 42672401 in words is "forty-two million, six hundred seventy-two thousand, four hundred one".