42047802 has 16 divisors (see below), whose sum is σ = 93439680. Its totient is φ = 14015916.

The previous prime is 42047801. The next prime is 42047821. The reversal of 42047802 is 20874024.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42047801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389278 + ... + 389385.

It is an arithmetic number, because the mean of its divisors is an integer number (5839980).

Almost surely, 2^42047802 is an apocalyptic number.

42047802 is an abundant number, since it is smaller than the sum of its proper divisors (51391878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42047802 is a wasteful number, since it uses less digits than its factorization.

42047802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778674 (or 778668 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 42047802 is about 6484.4276540031. The cubic root of 42047802 is about 347.7344883197.

Subtracting from 42047802 its reverse (20874024), we obtain a triangular number (21173778 = T₆₅₀₇).

It can be divided in two parts, 42047 and 802, that added together give a square (42849 = 207²).

The spelling of 42047802 in words is "forty-two million, forty-seven thousand, eight hundred two".