1253406045 has 32 divisors (see below), whose sum is σ = 2095264512. Its totient is φ = 638618112.

The previous prime is 1253406031. The next prime is 1253406059. The reversal of 1253406045 is 5406043521.

It is an interprime number because it is at equal distance from previous prime (1253406031) and next prime (1253406059).

It is not a de Polignac number, because 1253406045 - 2¹³ = 1253397853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354627 + ... + 358143.

It is an arithmetic number, because the mean of its divisors is an integer number (65477016).

Almost surely, 2^1253406045 is an apocalyptic number.

1253406045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253406045 is a deficient number, since it is larger than the sum of its proper divisors (841858467).

1253406045 is a wasteful number, since it uses less digits than its factorization.

1253406045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1253406045 is about 35403.4750413007. The cubic root of 1253406045 is about 1078.1948712205.

Adding to 1253406045 its reverse (5406043521), we get a palindrome (6659449566).

The spelling of 1253406045 in words is "one billion, two hundred fifty-three million, four hundred six thousand, forty-five".