1422642820 has 24 divisors (see below), whose sum is σ = 2988295128. Its totient is φ = 568915200.

The previous prime is 1422642817. The next prime is 1422642853. The reversal of 1422642820 is 282462241.

It can be written as a sum of positive squares in 4 ways, for example, as 32993536 + 1389649284 = 5744^2 + 37278^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116610 + ... + 128230.

It is an arithmetic number, because the mean of its divisors is an integer number (124512297).

Almost surely, 2^1422642820 is an apocalyptic number.

1422642820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422642820 is an abundant number, since it is smaller than the sum of its proper divisors (1565652308).

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

1422642820 is a wasteful number, since it uses less digits than its factorization.

1422642820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17751 (or 17749 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 1422642820 is about 37717.9376424534. The cubic root of 1422642820 is about 1124.6877342379.

The spelling of 1422642820 in words is "one billion, four hundred twenty-two million, six hundred forty-two thousand, eight hundred twenty".