42126243 has 8 divisors (see below), whose sum is σ = 56247888. Its totient is φ = 28044384.

The previous prime is 42126223. The next prime is 42126263. The reversal of 42126243 is 34262124.

It is an interprime number because it is at equal distance from previous prime (42126223) and next prime (42126263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42126243 - 2²² = 37931939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42126223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7380 + ... + 11777.

It is an arithmetic number, because the mean of its divisors is an integer number (7030986).

Almost surely, 2^42126243 is an apocalyptic number.

42126243 is a deficient number, since it is larger than the sum of its proper divisors (14121645).

42126243 is a wasteful number, since it uses less digits than its factorization.

42126243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19893.

The product of its digits is 2304, while the sum is 24.

The square root of 42126243 is about 6490.4732493093. The cubic root of 42126243 is about 347.9505891665.

Adding to 42126243 its reverse (34262124), we get a palindrome (76388367).

The spelling of 42126243 in words is "forty-two million, one hundred twenty-six thousand, two hundred forty-three".