2145146 has 8 divisors (see below), whose sum is σ = 3241620. Its totient is φ = 1064608.

The previous prime is 2145137. The next prime is 2145151. The reversal of 2145146 is 6415412.

It can be written as a sum of positive squares in 2 ways, for example, as 2088025 + 57121 = 1445^2 + 239^2 .

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

It is a super-3 number, since 3×2145146³ = 29613642033364716408, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam 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, 3641 + ... + 4188.

2^2145146 is an apocalyptic number.

2145146 is a deficient number, since it is larger than the sum of its proper divisors (1096474).

2145146 is a wasteful number, since it uses less digits than its factorization.

2145146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968.

The product of its digits is 960, while the sum is 23.

The square root of 2145146 is about 1464.6316943177. The cubic root of 2145146 is about 128.9690849941.

The spelling of 2145146 in words is "two million, one hundred forty-five thousand, one hundred forty-six".