42150040 has 32 divisors (see below), whose sum is σ = 95256000. Its totient is φ = 16785664.

The previous prime is 42150029. The next prime is 42150047. The reversal of 42150040 is 4005124.

It is a junction number, because it is equal to n+sod(n) for n = 42149996 and 42150023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42150047) 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, 7356 + ... + 11764.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^42150040 is an apocalyptic number.

42150040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42150040 is an abundant number, since it is smaller than the sum of its proper divisors (53105960).

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

42150040 is a wasteful number, since it uses less digits than its factorization.

42150040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42150040 is about 6492.3062158219. The cubic root of 42150040 is about 348.0160956135.

Adding to 42150040 its reverse (4005124), we get a palindrome (46155164).

The spelling of 42150040 in words is "forty-two million, one hundred fifty thousand, forty".