1200710157 has 4 divisors (see below), whose sum is σ = 1600946880. Its totient is φ = 800473436.

The previous prime is 1200710143. The next prime is 1200710179. The reversal of 1200710157 is 7510170021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200710157 - 2⁴ = 1200710141 is a prime.

It is a super-2 number, since 2×1200710157² = 2883409762245929298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200710117) 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 3 ways as a sum of consecutive naturals, for example, 200118357 + ... + 200118362.

It is an arithmetic number, because the mean of its divisors is an integer number (400236720).

Almost surely, 2^1200710157 is an apocalyptic number.

It is an amenable number.

1200710157 is a deficient number, since it is larger than the sum of its proper divisors (400236723).

1200710157 is an equidigital number, since it uses as much as digits as its factorization.

1200710157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400236722.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 1200710157 is about 34651.2648686884. The cubic root of 1200710157 is about 1062.8681540723.

Adding to 1200710157 its reverse (7510170021), we get a palindrome (8710880178).

The spelling of 1200710157 in words is "one billion, two hundred million, seven hundred ten thousand, one hundred fifty-seven".