121353142 has 4 divisors (see below), whose sum is σ = 182029716. Its totient is φ = 60676570.

The previous prime is 121353119. The next prime is 121353173. The reversal of 121353142 is 241353121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241353121 = 3557 ⋅67853.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30338284 + ... + 30338287.

It is an arithmetic number, because the mean of its divisors is an integer number (45507429).

Almost surely, 2^121353142 is an apocalyptic number.

121353142 is a deficient number, since it is larger than the sum of its proper divisors (60676574).

121353142 is an equidigital number, since it uses as much as digits as its factorization.

121353142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60676573.

The product of its digits is 720, while the sum is 22.

The square root of 121353142 is about 11016.0402141604. The cubic root of 121353142 is about 495.0894536155.

The spelling of 121353142 in words is "one hundred twenty-one million, three hundred fifty-three thousand, one hundred forty-two".