1000423420 has 24 divisors (see below), whose sum is σ = 2116932048. Its totient is φ = 397113600.

The previous prime is 1000423409. The next prime is 1000423439. The reversal of 1000423420 is 243240001.

It is a junction number, because it is equal to n+sod(n) for n = 1000423394 and 1000423403.

It is a congruent number.

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, 188301 + ... + 193540.

It is an arithmetic number, because the mean of its divisors is an integer number (88205502).

Almost surely, 2^1000423420 is an apocalyptic number.

1000423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000423420 is an abundant number, since it is smaller than the sum of its proper divisors (1116508628).

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

1000423420 is a wasteful number, since it uses less digits than its factorization.

1000423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381981 (or 381979 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1000423420 is about 31629.4707511839. The cubic root of 1000423420 is about 1000.1411200842.

Adding to 1000423420 its reverse (243240001), we get a palindrome (1243663421).

The spelling of 1000423420 in words is "one billion, four hundred twenty-three thousand, four hundred twenty".