42212055 has 16 divisors (see below), whose sum is σ = 67663584. Its totient is φ = 22471680.

The previous prime is 42212047. The next prime is 42212113. The reversal of 42212055 is 55021224.

It is a happy number.

It is not a de Polignac number, because 42212055 - 2³ = 42212047 is a prime.

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, 6975 + ... + 11535.

It is an arithmetic number, because the mean of its divisors is an integer number (4228974).

Almost surely, 2^42212055 is an apocalyptic number.

42212055 is a deficient number, since it is larger than the sum of its proper divisors (25451529).

42212055 is a wasteful number, since it uses less digits than its factorization.

42212055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42212055 is about 6497.0804981930. The cubic root of 42212055 is about 348.1866896962.

Adding to 42212055 its reverse (55021224), we get a palindrome (97233279).

It can be divided in two parts, 42 and 212055, that multiplied together give a triangular number (8906310 = T₄₂₂₀).

The spelling of 42212055 in words is "forty-two million, two hundred twelve thousand, fifty-five".