1294422840 has 96 divisors (see below), whose sum is σ = 4454358480. Its totient is φ = 324873216.

The previous prime is 1294422803. The next prime is 1294422841. The reversal of 1294422840 is 482244921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1294422795 and 1294422804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294422841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99634 + ... + 111873.

Almost surely, 2^1294422840 is an apocalyptic number.

1294422840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1294422840 is an abundant number, since it is smaller than the sum of its proper divisors (3159935640).

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

1294422840 is a wasteful number, since it uses less digits than its factorization.

1294422840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211541 (or 211534 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1294422840 is about 35978.0883316499. The cubic root of 1294422840 is about 1089.8299092111.

The spelling of 1294422840 in words is "one billion, two hundred ninety-four million, four hundred twenty-two thousand, eight hundred forty".