2145142 has 8 divisors (see below), whose sum is σ = 3224016. Its totient is φ = 1070472.

The previous prime is 2145137. The next prime is 2145151. The reversal of 2145142 is 2415412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143 + ... + 2365.

It is an arithmetic number, because the mean of its divisors is an integer number (403002).

2^2145142 is an apocalyptic number.

2145142 is a deficient number, since it is larger than the sum of its proper divisors (1078874).

2145142 is a wasteful number, since it uses less digits than its factorization.

2145142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its digits is 320, while the sum is 19.

The square root of 2145142 is about 1464.6303287861. The cubic root of 2145142 is about 128.9690048322.

It can be divided in two parts, 2145 and 142, that multiplied together give a triangular number (304590 = T₇₈₀).

The spelling of 2145142 in words is "two million, one hundred forty-five thousand, one hundred forty-two".