42042029 has 4 divisors (see below), whose sum is σ = 42137376. Its totient is φ = 41946684.

The previous prime is 42042023. The next prime is 42042053. The reversal of 42042029 is 92024024.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42042029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42041995 and 42042013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042023) 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, 47009 + ... + 47894.

It is an arithmetic number, because the mean of its divisors is an integer number (10534344).

Almost surely, 2^42042029 is an apocalyptic number.

It is an amenable number.

42042029 is a deficient number, since it is larger than the sum of its proper divisors (95347).

42042029 is an equidigital number, since it uses as much as digits as its factorization.

42042029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95346.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42042029 is about 6483.9824953496. The cubic root of 42042029 is about 347.7185733929.

The spelling of 42042029 in words is "forty-two million, forty-two thousand, twenty-nine".