1043420420 has 24 divisors (see below), whose sum is σ = 2504209344. Its totient is φ = 357744096.

The previous prime is 1043420363. The next prime is 1043420429. The reversal of 1043420420 is 240243401.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1043420392 and 1043420401.

It is not an unprimeable number, because it can be changed into a prime (1043420429) 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 7 ways as a sum of consecutive naturals, for example, 3726362 + ... + 3726641.

It is an arithmetic number, because the mean of its divisors is an integer number (104342056).

Almost surely, 2^1043420420 is an apocalyptic number.

1043420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043420420 is an abundant number, since it is smaller than the sum of its proper divisors (1460788924).

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

1043420420 is a wasteful number, since it uses less digits than its factorization.

1043420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453019 (or 7453017 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1043420420 is about 32302.0188223585. The cubic root of 1043420420 is about 1014.2689033403.

Adding to 1043420420 its reverse (240243401), we get a palindrome (1283663821).

The spelling of 1043420420 in words is "one billion, forty-three million, four hundred twenty thousand, four hundred twenty".