122020442 has 4 divisors (see below), whose sum is σ = 183030666. Its totient is φ = 61010220.

The previous prime is 122020427. The next prime is 122020447. The reversal of 122020442 is 244020221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120978001 + 1042441 = 10999^2 + 1021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122020442.

It is not an unprimeable number, because it can be changed into a prime (122020447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30505109 + ... + 30505112.

Almost surely, 2^122020442 is an apocalyptic number.

122020442 is a deficient number, since it is larger than the sum of its proper divisors (61010224).

122020442 is an equidigital number, since it uses as much as digits as its factorization.

122020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61010223.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 122020442 is about 11046.2863442878. The cubic root of 122020442 is about 495.9952658454.

Adding to 122020442 its reverse (244020221), we get a palindrome (366040663).

The spelling of 122020442 in words is "one hundred twenty-two million, twenty thousand, four hundred forty-two".