1050531421 has 4 divisors (see below), whose sum is σ = 1056335644. Its totient is φ = 1044727200.

The previous prime is 1050531389. The next prime is 1050531487. The reversal of 1050531421 is 1241350501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 414936900 + 635594521 = 20370^2 + 25211^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050531421 - 2⁵ = 1050531389 is a prime.

It is a super-2 number, since 2×1050531421² = 2207232533016558482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1050531392 and 1050531401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050531821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2901840 + ... + 2902201.

It is an arithmetic number, because the mean of its divisors is an integer number (264083911).

Almost surely, 2^1050531421 is an apocalyptic number.

It is an amenable number.

1050531421 is a deficient number, since it is larger than the sum of its proper divisors (5804223).

1050531421 is an equidigital number, since it uses as much as digits as its factorization.

1050531421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804222.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1050531421 is about 32411.9024588190. The cubic root of 1050531421 is about 1016.5677991230.

Adding to 1050531421 its reverse (1241350501), we get a palindrome (2291881922).

The spelling of 1050531421 in words is "one billion, fifty million, five hundred thirty-one thousand, four hundred twenty-one".