1240463453 has 4 divisors (see below), whose sum is σ = 1241115840. Its totient is φ = 1239811068.

The previous prime is 1240463417. The next prime is 1240463461. The reversal of 1240463453 is 3543640421.

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 1240463453 - 2¹⁴ = 1240447069 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 (1240463153) 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, 323333 + ... + 327146.

It is an arithmetic number, because the mean of its divisors is an integer number (310278960).

Almost surely, 2^1240463453 is an apocalyptic number.

It is an amenable number.

1240463453 is a deficient number, since it is larger than the sum of its proper divisors (652387).

1240463453 is an equidigital number, since it uses as much as digits as its factorization.

1240463453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652386.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 1240463453 is about 35220.2136989542. The cubic root of 1240463453 is about 1074.4708996772.

It can be divided in two parts, 12404 and 63453, that added together give a palindrome (75857).

The spelling of 1240463453 in words is "one billion, two hundred forty million, four hundred sixty-three thousand, four hundred fifty-three".