42775070 has 32 divisors (see below), whose sum is σ = 83274912. Its totient is φ = 15725952.

The previous prime is 42775063. The next prime is 42775079. The reversal of 42775070 is 7057724.

It is a happy number.

It is a super-2 number, since 2×42775070² = 3659413227009800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42775079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37529 + ... + 38651.

It is an arithmetic number, because the mean of its divisors is an integer number (2602341).

Almost surely, 2^42775070 is an apocalyptic number.

42775070 is a deficient number, since it is larger than the sum of its proper divisors (40499842).

42775070 is a wasteful number, since it uses less digits than its factorization.

42775070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 42775070 is about 6540.2652851394. The cubic root of 42775070 is about 349.7278701027.

The spelling of 42775070 in words is "forty-two million, seven hundred seventy-five thousand, seventy".