8042357 has 4 divisors (see below), whose sum is σ = 8259756. Its totient is φ = 7824960.

The previous prime is 8042351. The next prime is 8042371. The reversal of 8042357 is 7532408.

It is a happy number.

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 2961841 + 5080516 = 1721^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 8042357 - 2⁸ = 8042101 is a prime.

It is a super-2 number, since 2×8042357² = 129359012230898, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8⁷ + 0 + 4 + 2⁷ + 3¹¹ + 5⁵ + 7⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042351) 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, 108644 + ... + 108717.

It is an arithmetic number, because the mean of its divisors is an integer number (2064939).

Almost surely, 2^8042357 is an apocalyptic number.

It is an amenable number.

8042357 is a deficient number, since it is larger than the sum of its proper divisors (217399).

8042357 is a wasteful number, since it uses less digits than its factorization.

8042357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217398.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 8042357 is about 2835.9049701991. The cubic root of 8042357 is about 200.3523538692.

The spelling of 8042357 in words is "eight million, forty-two thousand, three hundred fifty-seven".