122040013 has 4 divisors (see below), whose sum is σ = 123711868. Its totient is φ = 120368160.

The previous prime is 122040007. The next prime is 122040019. The reversal of 122040013 is 310040221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (122040007) and next prime (122040019).

It can be written as a sum of positive squares in 2 ways, for example, as 55160329 + 66879684 = 7427^2 + 8178^2 .

It is a cyclic number.

It is not a de Polignac number, because 122040013 - 2¹³ = 122031821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122039975 and 122040002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122040019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835818 + ... + 835963.

It is an arithmetic number, because the mean of its divisors is an integer number (30927967).

Almost surely, 2^122040013 is an apocalyptic number.

It is an amenable number.

122040013 is a deficient number, since it is larger than the sum of its proper divisors (1671855).

122040013 is an equidigital number, since it uses as much as digits as its factorization.

122040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671854.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 122040013 is about 11047.1721720991. The cubic root of 122040013 is about 496.0217821795.

Adding to 122040013 its reverse (310040221), we get a palindrome (432080234).

The spelling of 122040013 in words is "one hundred twenty-two million, forty thousand, thirteen".