1201052156 has 6 divisors (see below), whose sum is σ = 2101841280. Its totient is φ = 600526076.

The previous prime is 1201052141. The next prime is 1201052183. The reversal of 1201052156 is 6512501021.

It is a happy number.

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, 150131516 + ... + 150131523.

It is an arithmetic number, because the mean of its divisors is an integer number (350306880).

Almost surely, 2^1201052156 is an apocalyptic number.

It is an amenable number.

1201052156 is a deficient number, since it is larger than the sum of its proper divisors (900789124).

1201052156 is a wasteful number, since it uses less digits than its factorization.

1201052156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300263043 (or 300263041 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1201052156 is about 34656.1993876997. The cubic root of 1201052156 is about 1062.9690569525.

Adding to 1201052156 its reverse (6512501021), we get a palindrome (7713553177).

The spelling of 1201052156 in words is "one billion, two hundred one million, fifty-two thousand, one hundred fifty-six".