122747078 has 4 divisors (see below), whose sum is σ = 184120620. Its totient is φ = 61373538.

The previous prime is 122747077. The next prime is 122747101. The reversal of 122747078 is 870747221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122747077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30686768 + ... + 30686771.

It is an arithmetic number, because the mean of its divisors is an integer number (46030155).

Almost surely, 2^122747078 is an apocalyptic number.

122747078 is a deficient number, since it is larger than the sum of its proper divisors (61373542).

122747078 is an equidigital number, since it uses as much as digits as its factorization.

122747078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61373541.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 122747078 is about 11079.1280342814. The cubic root of 122747078 is about 496.9778743151.

The spelling of 122747078 in words is "one hundred twenty-two million, seven hundred forty-seven thousand, seventy-eight".