4221402431 has 8 divisors (see below), whose sum is σ = 4329733824. Its totient is φ = 4113842560.

The previous prime is 4221402397. The next prime is 4221402433. The reversal of 4221402431 is 1342041224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4221402431 is a prime.

It is a super-2 number, since 2×4221402431² = 35640476968905419522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221402397 and 4221402406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221402433) 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, 181790 + ... + 203691.

It is an arithmetic number, because the mean of its divisors is an integer number (541216728).

Almost surely, 2^4221402431 is an apocalyptic number.

4221402431 is a deficient number, since it is larger than the sum of its proper divisors (108331393).

4221402431 is a wasteful number, since it uses less digits than its factorization.

4221402431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385761.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4221402431 is about 64972.3204988093. The cubic root of 4221402431 is about 1616.1645829855.

Adding to 4221402431 its reverse (1342041224), we get a palindrome (5563443655).

The spelling of 4221402431 in words is "four billion, two hundred twenty-one million, four hundred two thousand, four hundred thirty-one".