121542068 has 6 divisors (see below), whose sum is σ = 212698626. Its totient is φ = 60771032.

The previous prime is 121542059. The next prime is 121542089. The reversal of 121542068 is 860245121.

It can be written as a sum of positive squares in only one way, i.e., 113465104 + 8076964 = 10652^2 + 2842^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121542068.

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, 15192755 + ... + 15192762.

It is an arithmetic number, because the mean of its divisors is an integer number (35449771).

Almost surely, 2^121542068 is an apocalyptic number.

It is an amenable number.

121542068 is a deficient number, since it is larger than the sum of its proper divisors (91156558).

121542068 is a wasteful number, since it uses less digits than its factorization.

121542068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30385521 (or 30385519 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 121542068 is about 11024.6119206075. The cubic root of 121542068 is about 495.3462434853.

Adding to 121542068 its reverse (860245121), we get a palindrome (981787189).

The spelling of 121542068 in words is "one hundred twenty-one million, five hundred forty-two thousand, sixty-eight".