1420431411 has 16 divisors (see below), whose sum is σ = 2165765888. Its totient is φ = 811188000.

The previous prime is 1420431407. The next prime is 1420431437. The reversal of 1420431411 is 1141340241.

It is not a de Polignac number, because 1420431411 - 2² = 1420431407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420431611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17136 + ... + 55986.

It is an arithmetic number, because the mean of its divisors is an integer number (135360368).

Almost surely, 2^1420431411 is an apocalyptic number.

1420431411 is a deficient number, since it is larger than the sum of its proper divisors (745334477).

1420431411 is a wasteful number, since it uses less digits than its factorization.

1420431411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40602.

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

The square root of 1420431411 is about 37688.6111577490. The cubic root of 1420431411 is about 1124.1046798549.

Adding to 1420431411 its reverse (1141340241), we get a palindrome (2561771652).

The spelling of 1420431411 in words is "one billion, four hundred twenty million, four hundred thirty-one thousand, four hundred eleven".