1000021461 has 8 divisors (see below), whose sum is σ = 1342955040. Its totient is φ = 661884432.

The previous prime is 1000021409. The next prime is 1000021489. The reversal of 1000021461 is 1641200001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000021461 - 2⁷ = 1000021333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000021461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000021261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1198650 + ... + 1199483.

It is an arithmetic number, because the mean of its divisors is an integer number (167869380).

Almost surely, 2^1000021461 is an apocalyptic number.

It is an amenable number.

1000021461 is a deficient number, since it is larger than the sum of its proper divisors (342933579).

1000021461 is a wasteful number, since it uses less digits than its factorization.

1000021461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398275.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1000021461 is about 31623.1159280676. The cubic root of 1000021461 is about 1000.0071536155.

Adding to 1000021461 its reverse (1641200001), we get a palindrome (2641221462).

The spelling of 1000021461 in words is "one billion, twenty-one thousand, four hundred sixty-one".