1421331061 has 4 divisors (see below), whose sum is σ = 1459745452. Its totient is φ = 1382916672.

The previous prime is 1421331013. The next prime is 1421331071. The reversal of 1421331061 is 1601331241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1601331241 = 53 ⋅30213797.

It can be written as a sum of positive squares in 2 ways, for example, as 489250161 + 932080900 = 22119^2 + 30530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421331061 - 2²⁵ = 1387776629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421331071) 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, 19207140 + ... + 19207213.

It is an arithmetic number, because the mean of its divisors is an integer number (364936363).

Almost surely, 2^1421331061 is an apocalyptic number.

It is an amenable number.

1421331061 is a deficient number, since it is larger than the sum of its proper divisors (38414391).

1421331061 is an equidigital number, since it uses as much as digits as its factorization.

1421331061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38414390.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1421331061 is about 37700.5445716637. The cubic root of 1421331061 is about 1124.3419522158.

The spelling of 1421331061 in words is "one billion, four hundred twenty-one million, three hundred thirty-one thousand, sixty-one".