1201297500 has 360 divisors, whose sum is σ = 4307558640. Its totient is φ = 287712000.

The previous prime is 1201297481. The next prime is 1201297507. The reversal of 1201297500 is 57921021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201297507) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 32467482 + ... + 32467518.

Almost surely, 2^1201297500 is an apocalyptic number.

1201297500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201297500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2153779320).

1201297500 is an abundant number, since it is smaller than the sum of its proper divisors (3106261140).

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

1201297500 is a wasteful number, since it uses less digits than its factorization.

1201297500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1201297500 is about 34659.7388911111. The cubic root of 1201297500 is about 1063.0414310852.

The spelling of 1201297500 in words is "one billion, two hundred one million, two hundred ninety-seven thousand, five hundred".