1274278542 has 16 divisors (see below), whose sum is σ = 2549856000. Its totient is φ = 424543032.

The previous prime is 1274278541. The next prime is 1274278547. The reversal of 1274278542 is 2458724721.

It is a junction number, because it is equal to n+sod(n) for n = 1274278494 and 1274278503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274278541) 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, 41128 + ... + 65115.

It is an arithmetic number, because the mean of its divisors is an integer number (159366000).

Almost surely, 2^1274278542 is an apocalyptic number.

1274278542 is an abundant number, since it is smaller than the sum of its proper divisors (1275577458).

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

1274278542 is a wasteful number, since it uses less digits than its factorization.

1274278542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108247.

The product of its digits is 250880, while the sum is 42.

The square root of 1274278542 is about 35697.0382805072. The cubic root of 1274278542 is about 1084.1468774939.

The spelling of 1274278542 in words is "one billion, two hundred seventy-four million, two hundred seventy-eight thousand, five hundred forty-two".