1254642117 has 8 divisors (see below), whose sum is σ = 1675389600. Its totient is φ = 835161360.

The previous prime is 1254642101. The next prime is 1254642119. The reversal of 1254642117 is 7112464521.

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

It is not a de Polignac number, because 1254642117 - 2⁴ = 1254642101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254642119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314367 + ... + 318332.

It is an arithmetic number, because the mean of its divisors is an integer number (209423700).

Almost surely, 2^1254642117 is an apocalyptic number.

It is an amenable number.

1254642117 is a deficient number, since it is larger than the sum of its proper divisors (420747483).

1254642117 is an equidigital number, since it uses as much as digits as its factorization.

1254642117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633363.

The product of its digits is 13440, while the sum is 33.

The square root of 1254642117 is about 35420.9276699524. The cubic root of 1254642117 is about 1078.5491827483.

The spelling of 1254642117 in words is "one billion, two hundred fifty-four million, six hundred forty-two thousand, one hundred seventeen".