1236056433421 has 32 divisors (see below), whose sum is σ = 1349365104000. Its totient is φ = 1128234396672.

The previous prime is 1236056433401. The next prime is 1236056433431. The reversal of 1236056433421 is 1243346506321.

It is a cyclic number.

It is not a de Polignac number, because 1236056433421 - 2¹¹ = 1236056431373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236056433401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39375510 + ... + 39406888.

It is an arithmetic number, because the mean of its divisors is an integer number (42167659500).

Almost surely, 2^{1236056433421} is an apocalyptic number.

It is an amenable number.

1236056433421 is a deficient number, since it is larger than the sum of its proper divisors (113308670579).

1236056433421 is a wasteful number, since it uses less digits than its factorization.

1236056433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31981.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 1236056433421 in words is "one trillion, two hundred thirty-six billion, fifty-six million, four hundred thirty-three thousand, four hundred twenty-one".