122154762442 has 8 divisors (see below), whose sum is σ = 188184363876. Its totient is φ = 59426641152.

The previous prime is 122154762439. The next prime is 122154762473. The reversal of 122154762442 is 244267451221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117353519761 + 4801242681 = 342569^2 + 69291^2 .

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

It is a super-2 number, since 2×122154762442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122154762395 and 122154762404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825369943 + ... + 825370090.

Almost surely, 2^122154762442 is an apocalyptic number.

122154762442 is a deficient number, since it is larger than the sum of its proper divisors (66029601434).

122154762442 is a wasteful number, since it uses less digits than its factorization.

122154762442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650740072.

The product of its digits is 215040, while the sum is 40.

The spelling of 122154762442 in words is "one hundred twenty-two billion, one hundred fifty-four million, seven hundred sixty-two thousand, four hundred forty-two".