10142491 has 2 divisors, whose sum is σ = 10142492. Its totient is φ = 10142490.

The previous prime is 10142479. The next prime is 10142501. The reversal of 10142491 is 19424101.

10142491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19424101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10142491 - 2²¹ = 8045339 is a prime.

It is not a weakly prime, because it can be changed into another prime (10142441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5071245 + 5071246.

It is an arithmetic number, because the mean of its divisors is an integer number (5071246).

Almost surely, 2^10142491 is an apocalyptic number.

10142491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10142491 is an equidigital number, since it uses as much as digits as its factorization.

10142491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 10142491 is about 3184.7277748655. The cubic root of 10142491 is about 216.4619386321.

Adding to 10142491 its reverse (19424101), we get a palindrome (29566592).

The spelling of 10142491 in words is "ten million, one hundred forty-two thousand, four hundred ninety-one".