142641511 has 2 divisors, whose sum is σ = 142641512. Its totient is φ = 142641510.

The previous prime is 142641487. The next prime is 142641533. The reversal of 142641511 is 115146241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142641511 - 2⁵ = 142641479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142641211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71320755 + 71320756.

It is an arithmetic number, because the mean of its divisors is an integer number (71320756).

Almost surely, 2^142641511 is an apocalyptic number.

142641511 is a deficient number, since it is larger than the sum of its proper divisors (1).

142641511 is an equidigital number, since it uses as much as digits as its factorization.

142641511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 25.

The square root of 142641511 is about 11943.2621590586. The cubic root of 142641511 is about 522.4948051650.

Adding to 142641511 its reverse (115146241), we get a palindrome (257787752).

The spelling of 142641511 in words is "one hundred forty-two million, six hundred forty-one thousand, five hundred eleven".