121040156 has 6 divisors (see below), whose sum is σ = 211820280. Its totient is φ = 60520076.

The previous prime is 121040147. The next prime is 121040177. The reversal of 121040156 is 651040121.

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, 15130016 + ... + 15130023.

It is an arithmetic number, because the mean of its divisors is an integer number (35303380).

Almost surely, 2^121040156 is an apocalyptic number.

It is an amenable number.

121040156 is a deficient number, since it is larger than the sum of its proper divisors (90780124).

121040156 is a wasteful number, since it uses less digits than its factorization.

121040156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30260043 (or 30260041 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 121040156 is about 11001.8251213151. The cubic root of 121040156 is about 494.6634531734.

Adding to 121040156 its reverse (651040121), we get a palindrome (772080277).

The spelling of 121040156 in words is "one hundred twenty-one million, forty thousand, one hundred fifty-six".