122040781 has 8 divisors (see below), whose sum is σ = 128750720. Its totient is φ = 115359552.

The previous prime is 122040731. The next prime is 122040797. The reversal of 122040781 is 187040221.

It is a happy number.

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 122040781 - 2¹⁵ = 122008013 is a prime.

It is a super-2 number, since 2×122040781² = 29787904454179922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122040731) 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, 1861 + ... + 15733.

It is an arithmetic number, because the mean of its divisors is an integer number (16093840).

Almost surely, 2^122040781 is an apocalyptic number.

It is an amenable number.

122040781 is a deficient number, since it is larger than the sum of its proper divisors (6709939).

122040781 is a wasteful number, since it uses less digits than its factorization.

122040781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14355.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 122040781 is about 11047.2069320711. The cubic root of 122040781 is about 496.0228226686.

The spelling of 122040781 in words is "one hundred twenty-two million, forty thousand, seven hundred eighty-one".