1042243541 has 2 divisors, whose sum is σ = 1042243542. Its totient is φ = 1042243540.

The previous prime is 1042243519. The next prime is 1042243547. The reversal of 1042243541 is 1453422401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742780516 + 299463025 = 27254^2 + 17305^2 .

It is an emirp because it is prime and its reverse (1453422401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042243541 - 2¹⁴ = 1042227157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042243541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042243547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521121770 + 521121771.

It is an arithmetic number, because the mean of its divisors is an integer number (521121771).

Almost surely, 2^1042243541 is an apocalyptic number.

It is an amenable number.

1042243541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042243541 is an equidigital number, since it uses as much as digits as its factorization.

1042243541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1042243541 is about 32283.7968801689. The cubic root of 1042243541 is about 1013.8874269274.

Adding to 1042243541 its reverse (1453422401), we get a palindrome (2495665942).

The spelling of 1042243541 in words is "one billion, forty-two million, two hundred forty-three thousand, five hundred forty-one".