1260021274 has 4 divisors (see below), whose sum is σ = 1890031914. Its totient is φ = 630010636.

The previous prime is 1260021263. The next prime is 1260021277. The reversal of 1260021274 is 4721200621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 926776249 + 333245025 = 30443^2 + 18255^2 .

It is a super-2 number, since 2×1260021274² = 3175307221865166152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1260021277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315005317 + ... + 315005320.

Almost surely, 2^1260021274 is an apocalyptic number.

1260021274 is a deficient number, since it is larger than the sum of its proper divisors (630010640).

1260021274 is an equidigital number, since it uses as much as digits as its factorization.

1260021274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630010639.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1260021274 is about 35496.7783608597. The cubic root of 1260021274 is about 1080.0883769700.

Adding to 1260021274 its reverse (4721200621), we get a palindrome (5981221895).

The spelling of 1260021274 in words is "one billion, two hundred sixty million, twenty-one thousand, two hundred seventy-four".