42051222031228 has 24 divisors (see below), whose sum is σ = 73809206750160. Its totient is φ = 20962895162880.

The previous prime is 42051222031223. The next prime is 42051222031267. The reversal of 42051222031228 is 82213022215024.

It is a junction number, because it is equal to n+sod(n) for n = 42051222031193 and 42051222031202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42051222031223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7166338 + ... + 11638678.

It is an arithmetic number, because the mean of its divisors is an integer number (3075383614590).

Almost surely, 2^{42051222031228} is an apocalyptic number.

It is an amenable number.

42051222031228 is a deficient number, since it is larger than the sum of its proper divisors (31757984718932).

42051222031228 is a wasteful number, since it uses less digits than its factorization.

42051222031228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479357 (or 4479355 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 42051222031228 in words is "forty-two trillion, fifty-one billion, two hundred twenty-two million, thirty-one thousand, two hundred twenty-eight".