1285316742 has 32 divisors (see below), whose sum is σ = 2598365952. Its totient is φ = 423828704.

The previous prime is 1285316719. The next prime is 1285316771. The reversal of 1285316742 is 2476135821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285316742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784348 + ... + 785984.

It is an arithmetic number, because the mean of its divisors is an integer number (81198936).

Almost surely, 2^1285316742 is an apocalyptic number.

1285316742 is an abundant number, since it is smaller than the sum of its proper divisors (1313049210).

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

1285316742 is a wasteful number, since it uses less digits than its factorization.

1285316742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its digits is 80640, while the sum is 39.

The square root of 1285316742 is about 35851.3143692111. The cubic root of 1285316742 is about 1087.2682885378.

The spelling of 1285316742 in words is "one billion, two hundred eighty-five million, three hundred sixteen thousand, seven hundred forty-two".