1066242500 has 60 divisors (see below), whose sum is σ = 2364892992. Its totient is φ = 420420000.

The previous prime is 1066242493. The next prime is 1066242503. The reversal of 1066242500 is 52426601.

It is a super-2 number, since 2×1066242500² = 2273746137612500000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066242500.

It is not an unprimeable number, because it can be changed into a prime (1066242503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 174497 + ... + 180503.

Almost surely, 2^1066242500 is an apocalyptic number.

1066242500 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 1066242500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182446496).

1066242500 is an abundant number, since it is smaller than the sum of its proper divisors (1298650492).

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

1066242500 is an equidigital number, since it uses as much as digits as its factorization.

1066242500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102 (or 6085 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1066242500 is about 32653.3688920454. The cubic root of 1066242500 is about 1021.6104573530.

The spelling of 1066242500 in words is "one billion, sixty-six million, two hundred forty-two thousand, five hundred".