42015430 has 32 divisors (see below), whose sum is σ = 77220864. Its totient is φ = 16456416.

The previous prime is 42015419. The next prime is 42015433. The reversal of 42015430 is 3451024.

It is a junction number, because it is equal to n+sod(n) for n = 42015398 and 42015407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015433) 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, 184977 + ... + 185203.

It is an arithmetic number, because the mean of its divisors is an integer number (2413152).

Almost surely, 2^42015430 is an apocalyptic number.

42015430 is a deficient number, since it is larger than the sum of its proper divisors (35205434).

42015430 is a wasteful number, since it uses less digits than its factorization.

42015430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42015430 is about 6481.9310394357. The cubic root of 42015430 is about 347.6452268095.

Adding to 42015430 its reverse (3451024), we get a palindrome (45466454).

The spelling of 42015430 in words is "forty-two million, fifteen thousand, four hundred thirty".