120234781 has 2 divisors, whose sum is σ = 120234782. Its totient is φ = 120234780.

The previous prime is 120234769. The next prime is 120234797. The reversal of 120234781 is 187432021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 53158681 = 8190^2 + 7291^2 .

It is a cyclic number.

It is not a de Polignac number, because 120234781 - 2⁵ = 120234749 is a prime.

It is a super-2 number, since 2×120234781² = 28912805124235922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120237781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60117390 + 60117391.

It is an arithmetic number, because the mean of its divisors is an integer number (60117391).

Almost surely, 2^120234781 is an apocalyptic number.

It is an amenable number.

120234781 is a deficient number, since it is larger than the sum of its proper divisors (1).

120234781 is an equidigital number, since it uses as much as digits as its factorization.

120234781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 120234781 is about 10965.1621511038. The cubic root of 120234781 is about 493.5638829372.

The spelling of 120234781 in words is "one hundred twenty million, two hundred thirty-four thousand, seven hundred eighty-one".