42070577 has 4 divisors (see below), whose sum is σ = 42083700. Its totient is φ = 42057456.

The previous prime is 42070571. The next prime is 42070583. The reversal of 42070577 is 77507024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (42070571) and next prime (42070583).

It can be written as a sum of positive squares in 2 ways, for example, as 16679056 + 25391521 = 4084^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 42070577 - 2⁶ = 42070513 is a prime.

It is a super-2 number, since 2×42070577² = 3539866898225858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42070571) 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 3 ways as a sum of consecutive naturals, for example, 1799 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (10520925).

Almost surely, 2^42070577 is an apocalyptic number.

It is an amenable number.

42070577 is a deficient number, since it is larger than the sum of its proper divisors (13123).

42070577 is an equidigital number, since it uses as much as digits as its factorization.

42070577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122.

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

The square root of 42070577 is about 6486.1835465858. The cubic root of 42070577 is about 347.7972599205.

The spelling of 42070577 in words is "forty-two million, seventy thousand, five hundred seventy-seven".