42755429 has 4 divisors (see below), whose sum is σ = 42768576. Its totient is φ = 42742284.

The previous prime is 42755423. The next prime is 42755431. The reversal of 42755429 is 92455724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42755429 - 2²⁰ = 41706853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42755392 and 42755401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42755423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282 + ... + 9524.

It is an arithmetic number, because the mean of its divisors is an integer number (10692144).

Almost surely, 2^42755429 is an apocalyptic number.

It is an amenable number.

42755429 is a deficient number, since it is larger than the sum of its proper divisors (13147).

42755429 is an equidigital number, since it uses as much as digits as its factorization.

42755429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13146.

The product of its digits is 100800, while the sum is 38.

The square root of 42755429 is about 6538.7635681373. The cubic root of 42755429 is about 349.6743338045.

The spelling of 42755429 in words is "forty-two million, seven hundred fifty-five thousand, four hundred twenty-nine".