42140034 has 16 divisors (see below), whose sum is σ = 93644640. Its totient is φ = 14046660.

The previous prime is 42140029. The next prime is 42140047. The reversal of 42140034 is 43004124.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42139989 and 42140016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390132 + ... + 390239.

It is an arithmetic number, because the mean of its divisors is an integer number (5852790).

Almost surely, 2^42140034 is an apocalyptic number.

42140034 is an abundant number, since it is smaller than the sum of its proper divisors (51504606).

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

42140034 is a wasteful number, since it uses less digits than its factorization.

42140034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780382 (or 780376 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42140034 is about 6491.5355656424. The cubic root of 42140034 is about 347.9885549149.

Adding to 42140034 its reverse (43004124), we get a palindrome (85144158).

The spelling of 42140034 in words is "forty-two million, one hundred forty thousand, thirty-four".