1201124156 has 24 divisors (see below), whose sum is σ = 2116307424. Its totient is φ = 596479680.

The previous prime is 1201124149. The next prime is 1201124173. The reversal of 1201124156 is 6514211021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390866 + ... + 393926.

It is an arithmetic number, because the mean of its divisors is an integer number (88179476).

Almost surely, 2^1201124156 is an apocalyptic number.

It is an amenable number.

1201124156 is a deficient number, since it is larger than the sum of its proper divisors (915183268).

1201124156 is a wasteful number, since it uses less digits than its factorization.

1201124156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1201124156 is about 34657.2381473192. The cubic root of 1201124156 is about 1062.9902972854.

Adding to 1201124156 its reverse (6514211021), we get a palindrome (7715335177).

The spelling of 1201124156 in words is "one billion, two hundred one million, one hundred twenty-four thousand, one hundred fifty-six".