141821639 has 2 divisors, whose sum is σ = 141821640. Its totient is φ = 141821638.

The previous prime is 141821591. The next prime is 141821651. The reversal of 141821639 is 936128141.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 141821639 - 2¹⁶ = 141756103 is a prime.

It is a super-2 number, since 2×141821639² = 40226754577292642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 141821599 and 141821608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141821689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70910819 + 70910820.

It is an arithmetic number, because the mean of its divisors is an integer number (70910820).

Almost surely, 2^141821639 is an apocalyptic number.

141821639 is a deficient number, since it is larger than the sum of its proper divisors (1).

141821639 is an equidigital number, since it uses as much as digits as its factorization.

141821639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 141821639 is about 11908.8890749725. The cubic root of 141821639 is about 521.4918193552.

The spelling of 141821639 in words is "one hundred forty-one million, eight hundred twenty-one thousand, six hundred thirty-nine".