42087046 has 4 divisors (see below), whose sum is σ = 63130572. Its totient is φ = 21043522.

The previous prime is 42087037. The next prime is 42087061. The reversal of 42087046 is 64078024.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×42087046² = 3542638882012232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42086999 and 42087017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10521760 + ... + 10521763.

It is an arithmetic number, because the mean of its divisors is an integer number (15782643).

Almost surely, 2^42087046 is an apocalyptic number.

42087046 is a deficient number, since it is larger than the sum of its proper divisors (21043526).

42087046 is a wasteful number, since it uses less digits than its factorization.

42087046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21043525.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 42087046 is about 6487.4529670742. The cubic root of 42087046 is about 347.8426370481.

The spelling of 42087046 in words is "forty-two million, eighty-seven thousand, forty-six".