1000265421 has 16 divisors (see below), whose sum is σ = 1363219200. Its totient is φ = 652101888.

The previous prime is 1000265417. The next prime is 1000265501. The reversal of 1000265421 is 1245620001.

It is not a de Polignac number, because 1000265421 - 2² = 1000265417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000265411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224665 + ... + 229073.

It is an arithmetic number, because the mean of its divisors is an integer number (85201200).

Almost surely, 2^1000265421 is an apocalyptic number.

It is an amenable number.

1000265421 is a deficient number, since it is larger than the sum of its proper divisors (362953779).

1000265421 is a wasteful number, since it uses less digits than its factorization.

1000265421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1000265421 is about 31626.9729977436. The cubic root of 1000265421 is about 1000.0884658402.

Adding to 1000265421 its reverse (1245620001), we get a palindrome (2245885422).

The spelling of 1000265421 in words is "one billion, two hundred sixty-five thousand, four hundred twenty-one".