64123122 has 16 divisors (see below), whose sum is σ = 146567232. Its totient is φ = 18320880.

The previous prime is 64123121. The next prime is 64123123. The reversal of 64123122 is 22132146.

It is an interprime number because it is at equal distance from previous prime (64123121) and next prime (64123123).

It is a super-2 number, since 2×64123122² = 8223549550053768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (64123121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763329 + ... + 763412.

It is an arithmetic number, because the mean of its divisors is an integer number (9160452).

Almost surely, 2^64123122 is an apocalyptic number.

64123122 is an abundant number, since it is smaller than the sum of its proper divisors (82444110).

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

64123122 is a wasteful number, since it uses less digits than its factorization.

64123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526753.

The product of its digits is 576, while the sum is 21.

The square root of 64123122 is about 8007.6914276213. The cubic root of 64123122 is about 400.2563398563.

Adding to 64123122 its reverse (22132146), we get a palindrome (86255268).

The spelling of 64123122 in words is "sixty-four million, one hundred twenty-three thousand, one hundred twenty-two".