1421041431 has 4 divisors (see below), whose sum is σ = 1894721912. Its totient is φ = 947360952.

The previous prime is 1421041411. The next prime is 1421041439. The reversal of 1421041431 is 1341401241.

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

It is not a de Polignac number, because 1421041431 - 2¹⁵ = 1421008663 is a prime.

It is a super-2 number, since 2×1421041431² = 4038717497237055522, 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 = 1421041398 and 1421041407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421041439) 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, 236840236 + ... + 236840241.

It is an arithmetic number, because the mean of its divisors is an integer number (473680478).

Almost surely, 2^1421041431 is an apocalyptic number.

1421041431 is a deficient number, since it is larger than the sum of its proper divisors (473680481).

1421041431 is an equidigital number, since it uses as much as digits as its factorization.

1421041431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473680480.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1421041431 is about 37696.7031847614. The cubic root of 1421041431 is about 1124.2655765586.

Adding to 1421041431 its reverse (1341401241), we get a palindrome (2762442672).

The spelling of 1421041431 in words is "one billion, four hundred twenty-one million, forty-one thousand, four hundred thirty-one".