141420021 has 32 divisors (see below), whose sum is σ = 204451200. Its totient is φ = 86676480.

The previous prime is 141420017. The next prime is 141420023. The reversal of 141420021 is 120024141.

It is not a de Polignac number, because 141420021 - 2² = 141420017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141420023) 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 31 ways as a sum of consecutive naturals, for example, 309225 + ... + 309681.

It is an arithmetic number, because the mean of its divisors is an integer number (6389100).

Almost surely, 2^141420021 is an apocalyptic number.

It is an amenable number.

141420021 is a deficient number, since it is larger than the sum of its proper divisors (63031179).

141420021 is a wasteful number, since it uses less digits than its factorization.

141420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 141420021 is about 11892.0150100813. The cubic root of 141420021 is about 520.9990912681. Note that the first 3 decimals are identical.

Adding to 141420021 its reverse (120024141), we get a palindrome (261444162).

The spelling of 141420021 in words is "one hundred forty-one million, four hundred twenty thousand, twenty-one".