3645142 has 4 divisors (see below), whose sum is σ = 5467716. Its totient is φ = 1822570.

The previous prime is 3645137. The next prime is 3645143. The reversal of 3645142 is 2415463.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911284 + ... + 911287.

It is an arithmetic number, because the mean of its divisors is an integer number (1366929).

Almost surely, 2^3645142 is an apocalyptic number.

3645142 is a deficient number, since it is larger than the sum of its proper divisors (1822574).

3645142 is a wasteful number, since it uses less digits than its factorization.

3645142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822573.

The product of its digits is 2880, while the sum is 25.

The square root of 3645142 is about 1909.2254974204. The cubic root of 3645142 is about 153.8998336654.

It can be divided in two parts, 364514 and 2, that multiplied together give a triangular number (729028 = T₁₂₀₇).

The spelling of 3645142 in words is "three million, six hundred forty-five thousand, one hundred forty-two".