1022420440 has 32 divisors (see below), whose sum is σ = 2339442000. Its totient is φ = 402035584.

The previous prime is 1022420429. The next prime is 1022420453. The reversal of 1022420440 is 440242201.

It is a super-2 number, since 2×1022420440² = 2090687112259587200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214255 + ... + 218974.

Almost surely, 2^1022420440 is an apocalyptic number.

1022420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022420440 is an abundant number, since it is smaller than the sum of its proper divisors (1317021560).

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

1022420440 is a wasteful number, since it uses less digits than its factorization.

1022420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433299 (or 433295 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1022420440 is about 31975.3098499452. The cubic root of 1022420440 is about 1007.4183125588.

Adding to 1022420440 its reverse (440242201), we get a palindrome (1462662641).

The spelling of 1022420440 in words is "one billion, twenty-two million, four hundred twenty thousand, four hundred forty".