1262135234 has 4 divisors (see below), whose sum is σ = 1893202854. Its totient is φ = 631067616.

The previous prime is 1262135153. The next prime is 1262135291. The reversal of 1262135234 is 4325312621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4325312621 = 7 ⋅617901803.

It can be written as a sum of positive squares in only one way, i.e., 843728209 + 418407025 = 29047^2 + 20455^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1262135197 and 1262135206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315533807 + ... + 315533810.

Almost surely, 2^1262135234 is an apocalyptic number.

1262135234 is a deficient number, since it is larger than the sum of its proper divisors (631067620).

1262135234 is an equidigital number, since it uses as much as digits as its factorization.

1262135234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631067619.

The product of its digits is 8640, while the sum is 29.

The square root of 1262135234 is about 35526.5426688272. The cubic root of 1262135234 is about 1080.6920672861.

Adding to 1262135234 its reverse (4325312621), we get a palindrome (5587447855).

The spelling of 1262135234 in words is "one billion, two hundred sixty-two million, one hundred thirty-five thousand, two hundred thirty-four".