42007277 has 4 divisors (see below), whose sum is σ = 45238620. Its totient is φ = 38775936.

The previous prime is 42007267. The next prime is 42007279. The reversal of 42007277 is 77270024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9357481 + 32649796 = 3059^2 + 5714^2 .

It is a cyclic number.

It is not a de Polignac number, because 42007277 - 2²⁴ = 25230061 is a prime.

It is a super-2 number, since 2×42007277² = 3529222641909458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42007279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615652 + ... + 1615677.

It is an arithmetic number, because the mean of its divisors is an integer number (11309655).

Almost surely, 2^42007277 is an apocalyptic number.

It is an amenable number.

42007277 is a deficient number, since it is larger than the sum of its proper divisors (3231343).

42007277 is a wasteful number, since it uses less digits than its factorization.

42007277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231342.

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 42007277 is about 6481.3021068301. The cubic root of 42007277 is about 347.6227387626.

The spelling of 42007277 in words is "forty-two million, seven thousand, two hundred seventy-seven".