1423290261 has 4 divisors (see below), whose sum is σ = 1897720352. Its totient is φ = 948860172.

The previous prime is 1423290221. The next prime is 1423290263. The reversal of 1423290261 is 1620923241.

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 not a de Polignac number, because 1423290261 - 2¹⁰ = 1423289237 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 (1423290263) 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, 237215041 + ... + 237215046.

It is an arithmetic number, because the mean of its divisors is an integer number (474430088).

Almost surely, 2^1423290261 is an apocalyptic number.

It is an amenable number.

1423290261 is a deficient number, since it is larger than the sum of its proper divisors (474430091).

1423290261 is an equidigital number, since it uses as much as digits as its factorization.

1423290261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474430090.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1423290261 is about 37726.5193332224. The cubic root of 1423290261 is about 1124.8583225042.

The spelling of 1423290261 in words is "one billion, four hundred twenty-three million, two hundred ninety thousand, two hundred sixty-one".