1000265420 has 72 divisors (see below), whose sum is σ = 2665671120. Its totient is φ = 311767680.

The previous prime is 1000265417. The next prime is 1000265501. The reversal of 1000265420 is 245620001.

It is a happy number.

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 = 1000265392 and 1000265401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35615 + ... + 57174.

It is an arithmetic number, because the mean of its divisors is an integer number (37023210).

Almost surely, 2^1000265420 is an apocalyptic number.

1000265420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000265420 is an abundant number, since it is smaller than the sum of its proper divisors (1665405700).

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

1000265420 is a wasteful number, since it uses less digits than its factorization.

1000265420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92823 (or 92814 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1000265420 is about 31626.9729819343. The cubic root of 1000265420 is about 1000.0884655070.

Adding to 1000265420 its reverse (245620001), we get a palindrome (1245885421).

The spelling of 1000265420 in words is "one billion, two hundred sixty-five thousand, four hundred twenty".