141563921 has 4 divisors (see below), whose sum is σ = 142938432. Its totient is φ = 140189412.

The previous prime is 141563911. The next prime is 141563957. The reversal of 141563921 is 129365141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129365141 = 67 ⋅1930823.

It is a cyclic number.

It is not a de Polignac number, because 141563921 - 2¹⁴ = 141547537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141563911) 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, 687101 + ... + 687306.

It is an arithmetic number, because the mean of its divisors is an integer number (35734608).

Almost surely, 2^141563921 is an apocalyptic number.

It is an amenable number.

141563921 is a deficient number, since it is larger than the sum of its proper divisors (1374511).

141563921 is a wasteful number, since it uses less digits than its factorization.

141563921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374510.

The product of its digits is 6480, while the sum is 32.

The square root of 141563921 is about 11898.0637500393. The cubic root of 141563921 is about 521.1757431882.

The spelling of 141563921 in words is "one hundred forty-one million, five hundred sixty-three thousand, nine hundred twenty-one".