42478527 has 16 divisors (see below), whose sum is σ = 69708800. Its totient is φ = 22406112.

The previous prime is 42478523. The next prime is 42478549. The reversal of 42478527 is 72587424.

It is not a de Polignac number, because 42478527 - 2² = 42478523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42478523) 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, 77527 + ... + 78072.

It is an arithmetic number, because the mean of its divisors is an integer number (4356800).

Almost surely, 2^42478527 is an apocalyptic number.

42478527 is a deficient number, since it is larger than the sum of its proper divisors (27230273).

42478527 is a wasteful number, since it uses less digits than its factorization.

42478527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155622.

The product of its digits is 125440, while the sum is 39.

The square root of 42478527 is about 6517.5552932062. Note that the first 3 decimals coincide. The cubic root of 42478527 is about 348.9178193104.

The spelling of 42478527 in words is "forty-two million, four hundred seventy-eight thousand, five hundred twenty-seven".