40042030 has 64 divisors (see below), whose sum is σ = 86220288. Its totient is φ = 13104000.

The previous prime is 40042027. The next prime is 40042039. The reversal of 40042030 is 3024004.

It is a self number, because there is not a number n which added to its sum of digits gives 40042030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159405 + ... + 159655.

It is an arithmetic number, because the mean of its divisors is an integer number (1347192).

Almost surely, 2^40042030 is an apocalyptic number.

40042030 is an abundant number, since it is smaller than the sum of its proper divisors (46178258).

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

40042030 is a wasteful number, since it uses less digits than its factorization.

40042030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 40042030 is about 6327.8772111981. The cubic root of 40042030 is about 342.1149312206.

Adding to 40042030 its reverse (3024004), we get a palindrome (43066034).

The spelling of 40042030 in words is "forty million, forty-two thousand, thirty", and thus it is an eban number.