42102412 has 24 divisors (see below), whose sum is σ = 82091520. Its totient is φ = 18729360.

The previous prime is 42102409. The next prime is 42102419. The reversal of 42102412 is 21420124.

It is a super-2 number, since 2×42102412² = 3545226192435488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42102419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8112 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (3420480).

Almost surely, 2^42102412 is an apocalyptic number.

It is an amenable number.

42102412 is a deficient number, since it is larger than the sum of its proper divisors (39989108).

42102412 is a wasteful number, since it uses less digits than its factorization.

42102412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20421 (or 20419 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42102412 is about 6488.6371450406. The cubic root of 42102412 is about 347.8849643999.

Adding to 42102412 its reverse (21420124), we get a palindrome (63522536).

The spelling of 42102412 in words is "forty-two million, one hundred two thousand, four hundred twelve".