2141506 has 4 divisors (see below), whose sum is σ = 3212262. Its totient is φ = 1070752.

The previous prime is 2141497. The next prime is 2141519. The reversal of 2141506 is 6051412.

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

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 65025 = 1441^2 + 255^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535375 + ... + 535378.

2^2141506 is an apocalyptic number.

2141506 is a deficient number, since it is larger than the sum of its proper divisors (1070756).

2141506 is a wasteful number, since it uses less digits than its factorization.

2141506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070755.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2141506 is about 1463.3885335071. The cubic root of 2141506 is about 128.8960964503.

Adding to 2141506 its reverse (6051412), we get a palindrome (8192918).

The spelling of 2141506 in words is "two million, one hundred forty-one thousand, five hundred six".