122002420 has 48 divisors (see below), whose sum is σ = 279014400. Its totient is φ = 44634240.

The previous prime is 122002411. The next prime is 122002427. The reversal of 122002420 is 24200221.

It is a self number, because there is not a number n which added to its sum of digits gives 122002420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002427) 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, 5485 + ... + 16555.

It is an arithmetic number, because the mean of its divisors is an integer number (5812800).

Almost surely, 2^122002420 is an apocalyptic number.

122002420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122002420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139507200).

122002420 is an abundant number, since it is smaller than the sum of its proper divisors (157011980).

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

122002420 is a wasteful number, since it uses less digits than its factorization.

122002420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11128 (or 11126 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 122002420 is about 11045.4705648967. The cubic root of 122002420 is about 495.9708457109.

Adding to 122002420 its reverse (24200221), we get a palindrome (146202641).

The spelling of 122002420 in words is "one hundred twenty-two million, two thousand, four hundred twenty".