42915541 has 2 divisors, whose sum is σ = 42915542. Its totient is φ = 42915540.

The previous prime is 42915503. The next prime is 42915553. The reversal of 42915541 is 14551924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27783441 + 15132100 = 5271^2 + 3890^2 .

It is a cyclic number.

It is not a de Polignac number, because 42915541 - 2⁷ = 42915413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42915581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21457770 + 21457771.

It is an arithmetic number, because the mean of its divisors is an integer number (21457771).

Almost surely, 2^42915541 is an apocalyptic number.

It is an amenable number.

42915541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42915541 is an equidigital number, since it uses as much as digits as its factorization.

42915541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 42915541 is about 6550.9954205449. The cubic root of 42915541 is about 350.1102808944.

The spelling of 42915541 in words is "forty-two million, nine hundred fifteen thousand, five hundred forty-one".