122540243402 has 8 divisors (see below), whose sum is σ = 186925795200. Its totient is φ = 60231645004.

The previous prime is 122540243393. The next prime is 122540243431. The reversal of 122540243402 is 204342045221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122540243402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519238202 + ... + 519238437.

It is an arithmetic number, because the mean of its divisors is an integer number (23365724400).

Almost surely, 2^122540243402 is an apocalyptic number.

122540243402 is a deficient number, since it is larger than the sum of its proper divisors (64385551798).

122540243402 is a wasteful number, since it uses less digits than its factorization.

122540243402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038476700.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 122540243402 its reverse (204342045221), we get a palindrome (326882288623).

The spelling of 122540243402 in words is "one hundred twenty-two billion, five hundred forty million, two hundred forty-three thousand, four hundred two".