1364136421 has 4 divisors (see below), whose sum is σ = 1367057952. Its totient is φ = 1361214892.

The previous prime is 1364136383. The next prime is 1364136439. The reversal of 1364136421 is 1246314631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1364136421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364136451) 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, 1460065 + ... + 1460998.

It is an arithmetic number, because the mean of its divisors is an integer number (341764488).

Almost surely, 2^1364136421 is an apocalyptic number.

It is an amenable number.

1364136421 is a deficient number, since it is larger than the sum of its proper divisors (2921531).

1364136421 is an equidigital number, since it uses as much as digits as its factorization.

1364136421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921530.

The product of its digits is 10368, while the sum is 31.

The square root of 1364136421 is about 36934.2174818961. The cubic root of 1364136421 is about 1109.0537673650.

The spelling of 1364136421 in words is "one billion, three hundred sixty-four million, one hundred thirty-six thousand, four hundred twenty-one".