1421072563 has 4 divisors (see below), whose sum is σ = 1434869488. Its totient is φ = 1407275640.

The previous prime is 1421072501. The next prime is 1421072591. The reversal of 1421072563 is 3652701241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421072563 - 2¹³ = 1421064371 is a prime.

It is a super-2 number, since 2×1421072563² = 4038894458622777938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421072593) 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, 6898308 + ... + 6898513.

It is an arithmetic number, because the mean of its divisors is an integer number (358717372).

Almost surely, 2^1421072563 is an apocalyptic number.

1421072563 is a deficient number, since it is larger than the sum of its proper divisors (13796925).

1421072563 is a wasteful number, since it uses less digits than its factorization.

1421072563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796924.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1421072563 is about 37697.1161098565. The cubic root of 1421072563 is about 1124.2737865891.

The spelling of 1421072563 in words is "one billion, four hundred twenty-one million, seventy-two thousand, five hundred sixty-three".