122430042 has 80 divisors (see below), whose sum is σ = 316768320. Its totient is φ = 34618752.

The previous prime is 122430037. The next prime is 122430043. The reversal of 122430042 is 240034221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122429997 and 122430024.

It is not an unprimeable number, because it can be changed into a prime (122430043) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 120834 + ... + 121842.

It is an arithmetic number, because the mean of its divisors is an integer number (3959604).

Almost surely, 2^122430042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122430042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158384160).

122430042 is an abundant number, since it is smaller than the sum of its proper divisors (194338278).

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

122430042 is a wasteful number, since it uses less digits than its factorization.

122430042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 122430042 is about 11064.8109789549. The cubic root of 122430042 is about 496.5496340519.

Adding to 122430042 its reverse (240034221), we get a palindrome (362464263).

The spelling of 122430042 in words is "one hundred twenty-two million, four hundred thirty thousand, forty-two".