122578039 has 4 divisors (see below), whose sum is σ = 122977624. Its totient is φ = 122178456.

The previous prime is 122578033. The next prime is 122578051. The reversal of 122578039 is 930875221.

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

It is a cyclic number.

It is not a de Polignac number, because 122578039 - 2⁹ = 122577527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122577989 and 122578007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122578033) 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, 199332 + ... + 199945.

It is an arithmetic number, because the mean of its divisors is an integer number (30744406).

Almost surely, 2^122578039 is an apocalyptic number.

122578039 is a deficient number, since it is larger than the sum of its proper divisors (399585).

122578039 is an equidigital number, since it uses as much as digits as its factorization.

122578039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399584.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 122578039 is about 11071.4966919563. The cubic root of 122578039 is about 496.7496347038.

The spelling of 122578039 in words is "one hundred twenty-two million, five hundred seventy-eight thousand, thirty-nine".