42103812 has 12 divisors (see below), whose sum is σ = 98242256. Its totient is φ = 14034600.

The previous prime is 42103811. The next prime is 42103813. The reversal of 42103812 is 21830124.

It is an interprime number because it is at equal distance from previous prime (42103811) and next prime (42103813).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (42103811) 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, 1754314 + ... + 1754337.

Almost surely, 2^42103812 is an apocalyptic number.

It is an amenable number.

42103812 is an abundant number, since it is smaller than the sum of its proper divisors (56138444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42103812 is a wasteful number, since it uses less digits than its factorization.

42103812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508658 (or 3508656 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 42103812 is about 6488.7450250414. The cubic root of 42103812 is about 347.8888203433. Note that the first 4 decimals are identical.

Adding to 42103812 its reverse (21830124), we get a palindrome (63933936).

The spelling of 42103812 in words is "forty-two million, one hundred three thousand, eight hundred twelve".