1285212496 has 20 divisors (see below), whose sum is σ = 2492028000. Its totient is φ = 642108512.

The previous prime is 1285212479. The next prime is 1285212499. The reversal of 1285212496 is 6942125821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285212499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9346 + ... + 51553.

It is an arithmetic number, because the mean of its divisors is an integer number (124601400).

Almost surely, 2^1285212496 is an apocalyptic number.

1285212496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1285212496 is a deficient number, since it is larger than the sum of its proper divisors (1206815504).

1285212496 is a wasteful number, since it uses less digits than its factorization.

1285212496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62226 (or 62220 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 1285212496 is about 35849.8604739265. The cubic root of 1285212496 is about 1087.2388933362.

The spelling of 1285212496 in words is "one billion, two hundred eighty-five million, two hundred twelve thousand, four hundred ninety-six".