1423240253 has 4 divisors (see below), whose sum is σ = 1485120288. Its totient is φ = 1361360220.

The previous prime is 1423240243. The next prime is 1423240271. The reversal of 1423240253 is 3520423241.

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 1423240253 - 2⁴ = 1423240237 is a prime.

It is a super-2 number, since 2×1423240253² = 4051225635519008018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423240213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30939983 + ... + 30940028.

It is an arithmetic number, because the mean of its divisors is an integer number (371280072).

Almost surely, 2^1423240253 is an apocalyptic number.

It is an amenable number.

1423240253 is a deficient number, since it is larger than the sum of its proper divisors (61880035).

1423240253 is an equidigital number, since it uses as much as digits as its factorization.

1423240253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61880034.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1423240253 is about 37725.8565575389. The cubic root of 1423240253 is about 1124.8451482006.

Adding to 1423240253 its reverse (3520423241), we get a palindrome (4943663494).

The spelling of 1423240253 in words is "one billion, four hundred twenty-three million, two hundred forty thousand, two hundred fifty-three".