1049961421 has 4 divisors (see below), whose sum is σ = 1054047132. Its totient is φ = 1045875712.

The previous prime is 1049961397. The next prime is 1049961449. The reversal of 1049961421 is 1241699401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241699401 = 6421 ⋅193381.

It can be written as a sum of positive squares in 2 ways, for example, as 511257321 + 538704100 = 22611^2 + 23210^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049961421 - 2⁵ = 1049961389 is a prime.

It is a super-2 number, since 2×1049961421² = 2204837971176678482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049961461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042470 + ... + 2042983.

It is an arithmetic number, because the mean of its divisors is an integer number (263511783).

Almost surely, 2^1049961421 is an apocalyptic number.

It is an amenable number.

1049961421 is a deficient number, since it is larger than the sum of its proper divisors (4085711).

1049961421 is an equidigital number, since it uses as much as digits as its factorization.

1049961421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085710.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1049961421 is about 32403.1081996774. The cubic root of 1049961421 is about 1016.3839085497.

The spelling of 1049961421 in words is "one billion, forty-nine million, nine hundred sixty-one thousand, four hundred twenty-one".