42041213 has 8 divisors (see below), whose sum is σ = 44667480. Its totient is φ = 39493440.

The previous prime is 42041183. The next prime is 42041231. The reversal of 42041213 is 31214024.

It can be written as a sum of positive squares in 4 ways, for example, as 23833924 + 18207289 = 4882^2 + 4267^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42041213 - 2²² = 37846909 is a prime.

It is a super-2 number, since 2×42041213² = 3534927181022738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42041191 and 42041200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42041273) 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, 18518 + ... + 20663.

It is an arithmetic number, because the mean of its divisors is an integer number (5583435).

Almost surely, 2^42041213 is an apocalyptic number.

It is an amenable number.

42041213 is a deficient number, since it is larger than the sum of its proper divisors (2626267).

42041213 is a wasteful number, since it uses less digits than its factorization.

42041213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39247.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42041213 is about 6483.9195707535. The cubic root of 42041213 is about 347.7163237378.

Adding to 42041213 its reverse (31214024), we get a palindrome (73255237).

The spelling of 42041213 in words is "forty-two million, forty-one thousand, two hundred thirteen".