121443156 has 36 divisors (see below), whose sum is σ = 307507200. Its totient is φ = 40411728.

The previous prime is 121443103. The next prime is 121443163. The reversal of 121443156 is 651344121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21165 + ... + 26283.

Almost surely, 2^121443156 is an apocalyptic number.

It is an amenable number.

121443156 is an abundant number, since it is smaller than the sum of its proper divisors (186064044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121443156 is a wasteful number, since it uses less digits than its factorization.

121443156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788 (or 5783 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 121443156 is about 11020.1250446626. The cubic root of 121443156 is about 495.2118346464.

Adding to 121443156 its reverse (651344121), we get a palindrome (772787277).

The spelling of 121443156 in words is "one hundred twenty-one million, four hundred forty-three thousand, one hundred fifty-six".