121323142 has 4 divisors (see below), whose sum is σ = 181984716. Its totient is φ = 60661570.

The previous prime is 121323107. The next prime is 121323143. The reversal of 121323142 is 241323121.

It is a happy number.

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

It is a super-3 number, since 3×121323142³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30330784 + ... + 30330787.

It is an arithmetic number, because the mean of its divisors is an integer number (45496179).

Almost surely, 2^121323142 is an apocalyptic number.

121323142 is a deficient number, since it is larger than the sum of its proper divisors (60661574).

121323142 is an equidigital number, since it uses as much as digits as its factorization.

121323142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60661573.

The product of its digits is 288, while the sum is 19.

The square root of 121323142 is about 11014.6784791931. The cubic root of 121323142 is about 495.0486528378.

Adding to 121323142 its reverse (241323121), we get a palindrome (362646263).

The spelling of 121323142 in words is "one hundred twenty-one million, three hundred twenty-three thousand, one hundred forty-two".