1423012261 has 4 divisors (see below), whose sum is σ = 1552377024. Its totient is φ = 1293647500.

The previous prime is 1423012247. The next prime is 1423012271. The reversal of 1423012261 is 1622103241.

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 not a de Polignac number, because 1423012261 - 2²¹ = 1420915109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423012271) 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, 64682365 + ... + 64682386.

It is an arithmetic number, because the mean of its divisors is an integer number (388094256).

Almost surely, 2^1423012261 is an apocalyptic number.

1423012261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1423012261 is a deficient number, since it is larger than the sum of its proper divisors (129364763).

1423012261 is a wasteful number, since it uses less digits than its factorization.

1423012261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129364762.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1423012261 is about 37722.8347423679. The cubic root of 1423012261 is about 1124.7850811834.

The spelling of 1423012261 in words is "one billion, four hundred twenty-three million, twelve thousand, two hundred sixty-one".