2750042 has 4 divisors (see below), whose sum is σ = 4125066. Its totient is φ = 1375020.

The previous prime is 2750029. The next prime is 2750053. The reversal of 2750042 is 2400572.

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., 2621161 + 128881 = 1619^2 + 359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2749996 and 2750023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687509 + ... + 687512.

2^2750042 is an apocalyptic number.

2750042 is a deficient number, since it is larger than the sum of its proper divisors (1375024).

2750042 is a wasteful number, since it uses less digits than its factorization.

2750042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375023.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2750042 is about 1658.3250586058. The cubic root of 2750042 is about 140.1026797755.

The spelling of 2750042 in words is "two million, seven hundred fifty thousand, forty-two".