42479855 has 16 divisors (see below), whose sum is σ = 58882464. Its totient is φ = 29076480.

The previous prime is 42479831. The next prime is 42479863. The reversal of 42479855 is 55897424.

It is a happy number.

It is not a de Polignac number, because 42479855 - 2¹⁰ = 42478831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21782 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (3680154).

Almost surely, 2^42479855 is an apocalyptic number.

42479855 is a deficient number, since it is larger than the sum of its proper divisors (16402609).

42479855 is a wasteful number, since it uses less digits than its factorization.

42479855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45466.

The product of its digits is 403200, while the sum is 44.

The square root of 42479855 is about 6517.6571711007. The cubic root of 42479855 is about 348.9214553281.

Subtracting 42479855 from its reverse (55897424), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 42479 and 855, that added together give a palindrome (43334).

The spelling of 42479855 in words is "forty-two million, four hundred seventy-nine thousand, eight hundred fifty-five".