1200123197 has 16 divisors (see below), whose sum is σ = 1486154880. Its totient is φ = 943710912.

The previous prime is 1200123173. The next prime is 1200123241. The reversal of 1200123197 is 7913210021.

It is a cyclic number.

It is not a de Polignac number, because 1200123197 - 2¹⁸ = 1199861053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200123137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25622 + ... + 55287.

It is an arithmetic number, because the mean of its divisors is an integer number (92884680).

Almost surely, 2^1200123197 is an apocalyptic number.

It is an amenable number.

1200123197 is a deficient number, since it is larger than the sum of its proper divisors (286031683).

1200123197 is a wasteful number, since it uses less digits than its factorization.

1200123197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81092.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1200123197 is about 34642.7943012685. The cubic root of 1200123197 is about 1062.6949335904.

The spelling of 1200123197 in words is "one billion, two hundred million, one hundred twenty-three thousand, one hundred ninety-seven".