1420121403 has 24 divisors (see below), whose sum is σ = 2172538368. Its totient is φ = 926596584.

The previous prime is 1420121371. The next prime is 1420121411. The reversal of 1420121403 is 3041210241.

1420121403 is a `hidden beast` number, since 142 + 0 + 121 + 403 = 666.

It is not a de Polignac number, because 1420121403 - 2⁵ = 1420121371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420121203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50751 + ... + 73592.

It is an arithmetic number, because the mean of its divisors is an integer number (90522432).

Almost surely, 2^1420121403 is an apocalyptic number.

1420121403 is a deficient number, since it is larger than the sum of its proper divisors (752416965).

1420121403 is an equidigital number, since it uses as much as digits as its factorization.

1420121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124405 (or 124393 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1420121403 is about 37684.4981789595. The cubic root of 1420121403 is about 1124.0228955941.

Adding to 1420121403 its reverse (3041210241), we get a palindrome (4461331644).

The spelling of 1420121403 in words is "one billion, four hundred twenty million, one hundred twenty-one thousand, four hundred three".