1274161240 has 32 divisors (see below), whose sum is σ = 3127487760. Its totient is φ = 463331200.

The previous prime is 1274161183. The next prime is 1274161241. The reversal of 1274161240 is 421614721.

It is a junction number, because it is equal to n+sod(n) for n = 1274161199 and 1274161208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274161241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447471 + ... + 1448350.

Almost surely, 2^1274161240 is an apocalyptic number.

1274161240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274161240 is an abundant number, since it is smaller than the sum of its proper divisors (1853326520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1274161240 is a wasteful number, since it uses less digits than its factorization.

1274161240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895843 (or 2895839 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1274161240 is about 35695.3952212327. The cubic root of 1274161240 is about 1084.1136099114.

Adding to 1274161240 its reverse (421614721), we get a palindrome (1695775961).

The spelling of 1274161240 in words is "one billion, two hundred seventy-four million, one hundred sixty-one thousand, two hundred forty".