42134623 has 2 divisors, whose sum is σ = 42134624. Its totient is φ = 42134622.

The previous prime is 42134621. The next prime is 42134627. The reversal of 42134623 is 32643124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42134623 - 2¹ = 42134621 is a prime.

Together with 42134621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42134621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21067311 + 21067312.

It is an arithmetic number, because the mean of its divisors is an integer number (21067312).

Almost surely, 2^42134623 is an apocalyptic number.

42134623 is a deficient number, since it is larger than the sum of its proper divisors (1).

42134623 is an equidigital number, since it uses as much as digits as its factorization.

42134623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

The square root of 42134623 is about 6491.1187787623. The cubic root of 42134623 is about 347.9736597626.

Adding to 42134623 its reverse (32643124), we get a palindrome (74777747).

It can be divided in two parts, 4213 and 4623, that added together give a square (8836 = 94²).

The spelling of 42134623 in words is "forty-two million, one hundred thirty-four thousand, six hundred twenty-three".