1230252729 has 8 divisors (see below), whose sum is σ = 1640499840. Its totient is φ = 820087056.

The previous prime is 1230252691. The next prime is 1230252731. The reversal of 1230252729 is 9272520321.

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

It is not a de Polignac number, because 1230252729 - 2⁸ = 1230252473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230252729.

It is not an unprimeable number, because it can be changed into a prime (1230252799) 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, 43584 + ... + 66030.

It is an arithmetic number, because the mean of its divisors is an integer number (205062480).

Almost surely, 2^1230252729 is an apocalyptic number.

It is an amenable number.

1230252729 is a deficient number, since it is larger than the sum of its proper divisors (410247111).

1230252729 is a wasteful number, since it uses less digits than its factorization.

1230252729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40719.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1230252729 is about 35074.9587170106. The cubic root of 1230252729 is about 1071.5146479392.

The spelling of 1230252729 in words is "one billion, two hundred thirty million, two hundred fifty-two thousand, seven hundred twenty-nine".