1201256029 has 16 divisors (see below), whose sum is σ = 1279929600. Its totient is φ = 1125013120.

The previous prime is 1201256027. The next prime is 1201256053. The reversal of 1201256029 is 9206521021.

It is a cyclic number.

It is not a de Polignac number, because 1201256029 - 2¹ = 1201256027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201255988 and 1201256006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201256027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240849 + ... + 245785.

It is an arithmetic number, because the mean of its divisors is an integer number (79995600).

Almost surely, 2^1201256029 is an apocalyptic number.

It is an amenable number.

1201256029 is a deficient number, since it is larger than the sum of its proper divisors (78673571).

1201256029 is a wasteful number, since it uses less digits than its factorization.

1201256029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1201256029 is about 34659.1406269688. The cubic root of 1201256029 is about 1063.0291982291.

The spelling of 1201256029 in words is "one billion, two hundred one million, two hundred fifty-six thousand, twenty-nine".