1421312345 has 16 divisors (see below), whose sum is σ = 1717582080. Its totient is φ = 1129075200.

The previous prime is 1421312329. The next prime is 1421312369. The reversal of 1421312345 is 5432131241.

It is a happy number.

It is not a de Polignac number, because 1421312345 - 2⁴ = 1421312329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446921 + ... + 450089.

It is an arithmetic number, because the mean of its divisors is an integer number (107348880).

Almost surely, 2^1421312345 is an apocalyptic number.

It is an amenable number.

1421312345 is a deficient number, since it is larger than the sum of its proper divisors (296269735).

1421312345 is a wasteful number, since it uses less digits than its factorization.

1421312345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776.

The product of its digits is 2880, while the sum is 26.

The square root of 1421312345 is about 37700.2963516204. The cubic root of 1421312345 is about 1124.3370171055.

Adding to 1421312345 its reverse (5432131241), we get a palindrome (6853443586).

The spelling of 1421312345 in words is "one billion, four hundred twenty-one million, three hundred twelve thousand, three hundred forty-five".