121422642 has 16 divisors (see below), whose sum is σ = 264922272. Its totient is φ = 36794720.

The previous prime is 121422617. The next prime is 121422643. The reversal of 121422642 is 246224121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121422643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919803 + ... + 919934.

It is an arithmetic number, because the mean of its divisors is an integer number (16557642).

Almost surely, 2^121422642 is an apocalyptic number.

121422642 is an abundant number, since it is smaller than the sum of its proper divisors (143499630).

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

121422642 is a wasteful number, since it uses less digits than its factorization.

121422642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839753.

The product of its digits is 1536, while the sum is 24.

The square root of 121422642 is about 11019.1942536648. The cubic root of 121422642 is about 495.1839495904.

Adding to 121422642 its reverse (246224121), we get a palindrome (367646763).

The spelling of 121422642 in words is "one hundred twenty-one million, four hundred twenty-two thousand, six hundred forty-two".