142041521 has 2 divisors, whose sum is σ = 142041522. Its totient is φ = 142041520.

The previous prime is 142041517. The next prime is 142041533. The reversal of 142041521 is 125140241.

It is a happy number.

142041521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76755121 + 65286400 = 8761^2 + 8080^2 .

It is a cyclic number.

It is not a de Polignac number, because 142041521 - 2² = 142041517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142041493 and 142041502.

It is not a weakly prime, because it can be changed into another prime (142043521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71020760 + 71020761.

It is an arithmetic number, because the mean of its divisors is an integer number (71020761).

Almost surely, 2^142041521 is an apocalyptic number.

It is an amenable number.

142041521 is a deficient number, since it is larger than the sum of its proper divisors (1).

142041521 is an equidigital number, since it uses as much as digits as its factorization.

142041521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 142041521 is about 11918.1173429363. The cubic root of 142041521 is about 521.7611892854.

Adding to 142041521 its reverse (125140241), we get a palindrome (267181762).

The spelling of 142041521 in words is "one hundred forty-two million, forty-one thousand, five hundred twenty-one".