122029257 has 12 divisors (see below), whose sum is σ = 189270096. Its totient is φ = 69730920.

The previous prime is 122029253. The next prime is 122029279. The reversal of 122029257 is 752920221.

It is not a de Polignac number, because 122029257 - 2² = 122029253 is a prime.

It is a super-2 number, since 2×122029257² = 29782279127944098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122029253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414919 + ... + 415212.

It is an arithmetic number, because the mean of its divisors is an integer number (15772508).

Almost surely, 2^122029257 is an apocalyptic number.

It is an amenable number.

122029257 is a deficient number, since it is larger than the sum of its proper divisors (67240839).

122029257 is an equidigital number, since it uses as much as digits as its factorization.

122029257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830148 (or 830141 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 122029257 is about 11046.6853399561. The cubic root of 122029257 is about 496.0072094534.

Adding to 122029257 its reverse (752920221), we get a palindrome (874949478).

The spelling of 122029257 in words is "one hundred twenty-two million, twenty-nine thousand, two hundred fifty-seven".