129245022 has 12 divisors (see below), whose sum is σ = 280030920. Its totient is φ = 43081668.

The previous prime is 129245009. The next prime is 129245023. The reversal of 129245022 is 220542921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129245023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3590122 + ... + 3590157.

It is an arithmetic number, because the mean of its divisors is an integer number (23335910).

Almost surely, 2^129245022 is an apocalyptic number.

129245022 is an abundant number, since it is smaller than the sum of its proper divisors (150785898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129245022 is a wasteful number, since it uses less digits than its factorization.

129245022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180287 (or 7180284 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 129245022 is about 11368.5980666043. The cubic root of 129245022 is about 505.5971395940.

Adding to 129245022 its reverse (220542921), we get a palindrome (349787943).

The spelling of 129245022 in words is "one hundred twenty-nine million, two hundred forty-five thousand, twenty-two".