42688363 has 2 divisors, whose sum is σ = 42688364. Its totient is φ = 42688362.

The previous prime is 42688337. The next prime is 42688367. The reversal of 42688363 is 36388624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42688363 - 2²¹ = 40591211 is a prime.

It is a super-3 number, since 3×42688363³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42688367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21344181 + 21344182.

It is an arithmetic number, because the mean of its divisors is an integer number (21344182).

Almost surely, 2^42688363 is an apocalyptic number.

42688363 is a deficient number, since it is larger than the sum of its proper divisors (1).

42688363 is an equidigital number, since it uses as much as digits as its factorization.

42688363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 42688363 is about 6533.6332159068. The cubic root of 42688363 is about 349.4914055233.

The spelling of 42688363 in words is "forty-two million, six hundred eighty-eight thousand, three hundred sixty-three".