1201260157 has 2 divisors, whose sum is σ = 1201260158. Its totient is φ = 1201260156.

The previous prime is 1201260149. The next prime is 1201260227. The reversal of 1201260157 is 7510621021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728676036 + 472584121 = 26994^2 + 21739^2 .

It is an emirp because it is prime and its reverse (7510621021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201260157 - 2³ = 1201260149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201200157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600630078 + 600630079.

It is an arithmetic number, because the mean of its divisors is an integer number (600630079).

Almost surely, 2^1201260157 is an apocalyptic number.

It is an amenable number.

1201260157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201260157 is an equidigital number, since it uses as much as digits as its factorization.

1201260157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1201260157 is about 34659.2001783076. The cubic root of 1201260157 is about 1063.0304158933.

Adding to 1201260157 its reverse (7510621021), we get a palindrome (8711881178).

The spelling of 1201260157 in words is "one billion, two hundred one million, two hundred sixty thousand, one hundred fifty-seven".