42060040 has 64 divisors (see below), whose sum is σ = 109330560. Its totient is φ = 14392320.

The previous prime is 42060037. The next prime is 42060047. The reversal of 42060040 is 4006024.

It is a junction number, because it is equal to n+sod(n) for n = 42059996 and 42060023.

It is not an unprimeable number, because it can be changed into a prime (42060047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4669 + ... + 10291.

It is an arithmetic number, because the mean of its divisors is an integer number (1708290).

Almost surely, 2^42060040 is an apocalyptic number.

42060040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42060040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54665280).

42060040 is an abundant number, since it is smaller than the sum of its proper divisors (67270520).

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

42060040 is a wasteful number, since it uses less digits than its factorization.

42060040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42060040 is about 6485.3712307007. The cubic root of 42060040 is about 347.7682210531.

Adding to 42060040 its reverse (4006024), we get a palindrome (46066064).

The spelling of 42060040 in words is "forty-two million, sixty thousand, forty", and thus it is an eban number.