121597342 has 4 divisors (see below), whose sum is σ = 182396016. Its totient is φ = 60798670.

The previous prime is 121597337. The next prime is 121597361. The reversal of 121597342 is 243795121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 121597298 and 121597307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30399334 + ... + 30399337.

It is an arithmetic number, because the mean of its divisors is an integer number (45599004).

Almost surely, 2^121597342 is an apocalyptic number.

121597342 is a deficient number, since it is larger than the sum of its proper divisors (60798674).

121597342 is an equidigital number, since it uses as much as digits as its factorization.

121597342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60798673.

The product of its digits is 15120, while the sum is 34.

The square root of 121597342 is about 11027.1184812715. The cubic root of 121597342 is about 495.4213220685.

The spelling of 121597342 in words is "one hundred twenty-one million, five hundred ninety-seven thousand, three hundred forty-two".