141421537 has 2 divisors, whose sum is σ = 141421538. Its totient is φ = 141421536.

The previous prime is 141421531. The next prime is 141421583. The reversal of 141421537 is 735124141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 18455616 = 11089^2 + 4296^2 .

It is an emirp because it is prime and its reverse (735124141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 141421537 - 2³ = 141421529 is a prime.

It is a super-2 number, since 2×141421537² = 40000102254884738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (141421531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70710768 + 70710769.

It is an arithmetic number, because the mean of its divisors is an integer number (70710769).

Almost surely, 2^141421537 is an apocalyptic number.

It is an amenable number.

141421537 is a deficient number, since it is larger than the sum of its proper divisors (1).

141421537 is an equidigital number, since it uses as much as digits as its factorization.

141421537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 141421537 is about 11892.0787501597. The cubic root of 141421537 is about 521.0009529371. Note that the first 3 decimals are identical.

Adding to 141421537 its reverse (735124141), we get a palindrome (876545678).

The spelling of 141421537 in words is "one hundred forty-one million, four hundred twenty-one thousand, five hundred thirty-seven".