1234136257 has 8 divisors (see below), whose sum is σ = 1279991552. Its totient is φ = 1188658800.

The previous prime is 1234136227. The next prime is 1234136261. The reversal of 1234136257 is 7526314321.

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 1234136257 - 2¹⁵ = 1234103489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234136207) 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, 87798 + ... + 100879.

It is an arithmetic number, because the mean of its divisors is an integer number (159998944).

Almost surely, 2^1234136257 is an apocalyptic number.

It is an amenable number.

1234136257 is a deficient number, since it is larger than the sum of its proper divisors (45855295).

1234136257 is a wasteful number, since it uses less digits than its factorization.

1234136257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188919.

The product of its digits is 30240, while the sum is 34.

The square root of 1234136257 is about 35130.2755041858. The cubic root of 1234136257 is about 1072.6409439436.

The spelling of 1234136257 in words is "one billion, two hundred thirty-four million, one hundred thirty-six thousand, two hundred fifty-seven".