1200501257 has 16 divisors (see below), whose sum is σ = 1324224000. Its totient is φ = 1083352320.

The previous prime is 1200501241. The next prime is 1200501259. The reversal of 1200501257 is 7521050021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1200501257 - 2⁴ = 1200501241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200501259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46994 + ... + 67892.

It is an arithmetic number, because the mean of its divisors is an integer number (82764000).

Almost surely, 2^1200501257 is an apocalyptic number.

1200501257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1200501257 is a deficient number, since it is larger than the sum of its proper divisors (123722743).

1200501257 is a wasteful number, since it uses less digits than its factorization.

1200501257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 1200501257 is about 34648.2504175896. The cubic root of 1200501257 is about 1062.8065110983.

Adding to 1200501257 its reverse (7521050021), we get a palindrome (8721551278).

The spelling of 1200501257 in words is "one billion, two hundred million, five hundred one thousand, two hundred fifty-seven".