1043401020 has 48 divisors (see below), whose sum is σ = 2989472640. Its totient is φ = 271768896.

The previous prime is 1043401013. The next prime is 1043401031. The reversal of 1043401020 is 201043401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199630 + ... + 204789.

It is an arithmetic number, because the mean of its divisors is an integer number (62280680).

Almost surely, 2^1043401020 is an apocalyptic number.

1043401020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043401020 is an abundant number, since it is smaller than the sum of its proper divisors (1946071620).

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

1043401020 is a wasteful number, since it uses less digits than its factorization.

1043401020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404474 (or 404472 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1043401020 is about 32301.7185301340. The cubic root of 1043401020 is about 1014.2626173031.

Adding to 1043401020 its reverse (201043401), we get a palindrome (1244444421).

The spelling of 1043401020 in words is "one billion, forty-three million, four hundred one thousand, twenty".