42231401 has 4 divisors (see below), whose sum is σ = 42317904. Its totient is φ = 42144900.

The previous prime is 42231389. The next prime is 42231403. The reversal of 42231401 is 10413224.

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-42231401 is a prime.

It is a super-5 number, since 5×42231401⁵ (a number of 39 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42231401.

It is not an unprimeable number, because it can be changed into a prime (42231403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42515 + ... + 43496.

It is an arithmetic number, because the mean of its divisors is an integer number (10579476).

Almost surely, 2^42231401 is an apocalyptic number.

It is an amenable number.

42231401 is a deficient number, since it is larger than the sum of its proper divisors (86503).

42231401 is an equidigital number, since it uses as much as digits as its factorization.

42231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86502.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42231401 is about 6498.5691502053. The cubic root of 42231401 is about 348.2398734839.

Adding to 42231401 its reverse (10413224), we get a palindrome (52644625).

The spelling of 42231401 in words is "forty-two million, two hundred thirty-one thousand, four hundred one".