121198742 has 8 divisors (see below), whose sum is σ = 207769296. Its totient is φ = 51942312.

The previous prime is 121198741. The next prime is 121198771. The reversal of 121198742 is 247891121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121198741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328513 + ... + 4328540.

It is an arithmetic number, because the mean of its divisors is an integer number (25971162).

Almost surely, 2^121198742 is an apocalyptic number.

121198742 is a deficient number, since it is larger than the sum of its proper divisors (86570554).

121198742 is an equidigital number, since it uses as much as digits as its factorization.

121198742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8657062.

The product of its digits is 8064, while the sum is 35.

The square root of 121198742 is about 11009.0300208511. The cubic root of 121198742 is about 494.8793938049.

The spelling of 121198742 in words is "one hundred twenty-one million, one hundred ninety-eight thousand, seven hundred forty-two".