1004133420 has 72 divisors (see below), whose sum is σ = 3116729616. Its totient is φ = 261539712.

The previous prime is 1004133409. The next prime is 1004133437. The reversal of 1004133420 is 243314001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1004133393 and 1004133402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57127 + ... + 72606.

Almost surely, 2^1004133420 is an apocalyptic number.

1004133420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004133420 is an abundant number, since it is smaller than the sum of its proper divisors (2112596196).

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

1004133420 is a wasteful number, since it uses less digits than its factorization.

1004133420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129791 (or 129786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1004133420 is about 31688.0643145018. The cubic root of 1004133420 is about 1001.3759126627.

Adding to 1004133420 its reverse (243314001), we get a palindrome (1247447421).

The spelling of 1004133420 in words is "one billion, four million, one hundred thirty-three thousand, four hundred twenty".