42136553 has 2 divisors, whose sum is σ = 42136554. Its totient is φ = 42136552.

The previous prime is 42136531. The next prime is 42136559. The reversal of 42136553 is 35563124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33327529 + 8809024 = 5773^2 + 2968^2 .

It is a cyclic number.

It is not a de Polignac number, because 42136553 - 2¹⁶ = 42071017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42136559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21068276 + 21068277.

It is an arithmetic number, because the mean of its divisors is an integer number (21068277).

Almost surely, 2^42136553 is an apocalyptic number.

It is an amenable number.

42136553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42136553 is an equidigital number, since it uses as much as digits as its factorization.

42136553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 42136553 is about 6491.2674417251. The cubic root of 42136553 is about 347.9789727243.

Adding to 42136553 its reverse (35563124), we get a palindrome (77699677).

The spelling of 42136553 in words is "forty-two million, one hundred thirty-six thousand, five hundred fifty-three".