1042261541 has 2 divisors, whose sum is σ = 1042261542. Its totient is φ = 1042261540.

The previous prime is 1042261523. The next prime is 1042261543. The reversal of 1042261541 is 1451622401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014741025 + 27520516 = 31855^2 + 5246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042261541 is a prime.

Together with 1042261543, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042261541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042261543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521130770 + 521130771.

It is an arithmetic number, because the mean of its divisors is an integer number (521130771).

Almost surely, 2^1042261541 is an apocalyptic number.

It is an amenable number.

1042261541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042261541 is an equidigital number, since it uses as much as digits as its factorization.

1042261541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1042261541 is about 32284.0756565834. The cubic root of 1042261541 is about 1013.8932636530.

Adding to 1042261541 its reverse (1451622401), we get a palindrome (2493883942).

The spelling of 1042261541 in words is "one billion, forty-two million, two hundred sixty-one thousand, five hundred forty-one".