122540234406 has 32 divisors (see below), whose sum is σ = 248134951680. Its totient is φ = 40340107296.

The previous prime is 122540234393. The next prime is 122540234407. The reversal of 122540234406 is 604432045221.

It is a super-2 number, since 2×122540234406² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122540234407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104386 + ... + 505941.

It is an arithmetic number, because the mean of its divisors is an integer number (7754217240).

Almost surely, 2^122540234406 is an apocalyptic number.

122540234406 is an abundant number, since it is smaller than the sum of its proper divisors (125594717274).

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

122540234406 is a wasteful number, since it uses less digits than its factorization.

122540234406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610748.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 122540234406 its reverse (604432045221), we get a palindrome (726972279627).

The spelling of 122540234406 in words is "one hundred twenty-two billion, five hundred forty million, two hundred thirty-four thousand, four hundred six".