1421251063 has 4 divisors (see below), whose sum is σ = 1421790640. Its totient is φ = 1420711488.

The previous prime is 1421251061. The next prime is 1421251087. The reversal of 1421251063 is 3601521241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3601521241 = 39451 ⋅91291.

It is a cyclic number.

It is not a de Polignac number, because 1421251063 - 2¹ = 1421251061 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 (1421251061) 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, 265818 + ... + 271111.

It is an arithmetic number, because the mean of its divisors is an integer number (355447660).

Almost surely, 2^1421251063 is an apocalyptic number.

1421251063 is a deficient number, since it is larger than the sum of its proper divisors (539577).

1421251063 is an equidigital number, since it uses as much as digits as its factorization.

1421251063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539576.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1421251063 is about 37699.4835906276. The cubic root of 1421251063 is about 1124.3208577179.

The spelling of 1421251063 in words is "one billion, four hundred twenty-one million, two hundred fifty-one thousand, sixty-three".