122729648 has 20 divisors (see below), whose sum is σ = 238103808. Its totient is φ = 61283520.

The previous prime is 122729641. The next prime is 122729657. The reversal of 122729648 is 846927221.

It is not an unprimeable number, because it can be changed into a prime (122729641) 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, 8465 + ... + 17807.

Almost surely, 2^122729648 is an apocalyptic number.

It is an amenable number.

122729648 is a deficient number, since it is larger than the sum of its proper divisors (115374160).

122729648 is an equidigital number, since it uses as much as digits as its factorization.

122729648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10172 (or 10166 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 122729648 is about 11078.3413921038. The cubic root of 122729648 is about 496.9543496970.

The spelling of 122729648 in words is "one hundred twenty-two million, seven hundred twenty-nine thousand, six hundred forty-eight".