1274523240 has 32 divisors (see below), whose sum is σ = 3823570080. Its totient is φ = 339872832.

The previous prime is 1274523197. The next prime is 1274523247. The reversal of 1274523240 is 423254721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1274523198 and 1274523207.

It is not an unprimeable number, because it can be changed into a prime (1274523247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5310394 + ... + 5310633.

It is an arithmetic number, because the mean of its divisors is an integer number (119486565).

Almost surely, 2^1274523240 is an apocalyptic number.

1274523240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274523240 is an abundant number, since it is smaller than the sum of its proper divisors (2549046840).

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

1274523240 is a wasteful number, since it uses less digits than its factorization.

1274523240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10621041 (or 10621037 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 1274523240 is about 35700.4655431830. The cubic root of 1274523240 is about 1084.2162688095.

Adding to 1274523240 its reverse (423254721), we get a palindrome (1697777961).

The spelling of 1274523240 in words is "one billion, two hundred seventy-four million, five hundred twenty-three thousand, two hundred forty".