1200858 has 16 divisors (see below), whose sum is σ = 2414016. Its totient is φ = 398240.

The previous prime is 1200839. The next prime is 1200869. The reversal of 1200858 is 8580021.

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, 1198 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (150876).

2^1200858 is an apocalyptic number.

1200858 is an abundant number, since it is smaller than the sum of its proper divisors (1213158).

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

1200858 is a wasteful number, since it uses less digits than its factorization.

1200858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1200858 is about 1095.8366666616. The cubic root of 1200858 is about 106.2911775804.

Adding to 1200858 its reverse (8580021), we get a palindrome (9780879).

The spelling of 1200858 in words is "one million, two hundred thousand, eight hundred fifty-eight".