1253420847 has 24 divisors (see below), whose sum is σ = 2070285984. Its totient is φ = 715843584.

The previous prime is 1253420827. The next prime is 1253420849. The reversal of 1253420847 is 7480243521.

It is a happy number.

It is not a de Polignac number, because 1253420847 - 2¹¹ = 1253418799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253420849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138823 + ... + 147575.

It is an arithmetic number, because the mean of its divisors is an integer number (86261916).

Almost surely, 2^1253420847 is an apocalyptic number.

1253420847 is a deficient number, since it is larger than the sum of its proper divisors (816865137).

1253420847 is a wasteful number, since it uses less digits than its factorization.

1253420847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039 (or 11036 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 1253420847 is about 35403.6840879590. The cubic root of 1253420847 is about 1078.1991154896.

The spelling of 1253420847 in words is "one billion, two hundred fifty-three million, four hundred twenty thousand, eight hundred forty-seven".