141145421 has 4 divisors (see below), whose sum is σ = 141320700. Its totient is φ = 140970144.

The previous prime is 141145409. The next prime is 141145439. The reversal of 141145421 is 124541141.

141145421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124541141 = 67 ⋅1858823.

It can be written as a sum of positive squares in 2 ways, for example, as 99400900 + 41744521 = 9970^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 141145421 - 2¹⁰ = 141144397 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 (141145021) 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, 86426 + ... + 88043.

It is an arithmetic number, because the mean of its divisors is an integer number (35330175).

Almost surely, 2^141145421 is an apocalyptic number.

It is an amenable number.

141145421 is a deficient number, since it is larger than the sum of its proper divisors (175279).

141145421 is an equidigital number, since it uses as much as digits as its factorization.

141145421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175278.

The product of its digits is 640, while the sum is 23.

The square root of 141145421 is about 11880.4638377464. The cubic root of 141145421 is about 520.6616589668.

Adding to 141145421 its reverse (124541141), we get a palindrome (265686562).

The spelling of 141145421 in words is "one hundred forty-one million, one hundred forty-five thousand, four hundred twenty-one".