42291434 has 24 divisors (see below), whose sum is σ = 67368672. Its totient is φ = 19906040.

The previous prime is 42291433. The next prime is 42291437. The reversal of 42291434 is 43419224.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42291397 and 42291406.

It is not an unprimeable number, because it can be changed into a prime (42291433) 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 11 ways as a sum of consecutive naturals, for example, 74837 + ... + 75399.

It is an arithmetic number, because the mean of its divisors is an integer number (2807028).

Almost surely, 2^42291434 is an apocalyptic number.

42291434 is a deficient number, since it is larger than the sum of its proper divisors (25077238).

42291434 is a wasteful number, since it uses less digits than its factorization.

42291434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 659 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 42291434 is about 6503.1864497337. The cubic root of 42291434 is about 348.4048059399.

The spelling of 42291434 in words is "forty-two million, two hundred ninety-one thousand, four hundred thirty-four".