1257229453 has 8 divisors (see below), whose sum is σ = 1289695680. Its totient is φ = 1224849120.

The previous prime is 1257229451. The next prime is 1257229471. The reversal of 1257229453 is 3549227521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1257229453 - 2¹ = 1257229451 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 (1257229451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8718 + ... + 50896.

It is an arithmetic number, because the mean of its divisors is an integer number (161211960).

Almost surely, 2^1257229453 is an apocalyptic number.

It is an amenable number.

1257229453 is a deficient number, since it is larger than the sum of its proper divisors (32466227).

1257229453 is an equidigital number, since it uses as much as digits as its factorization.

1257229453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42947.

The product of its digits is 151200, while the sum is 40.

The square root of 1257229453 is about 35457.4315623679. The cubic root of 1257229453 is about 1079.2900721324.

It can be divided in two parts, 12572 and 29453, that added together give a square (42025 = 205²).

The spelling of 1257229453 in words is "one billion, two hundred fifty-seven million, two hundred twenty-nine thousand, four hundred fifty-three".