2042730 has 24 divisors (see below), whose sum is σ = 5311332. Its totient is φ = 544704.

The previous prime is 2042717. The next prime is 2042749. The reversal of 2042730 is 372402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 370881 = 1293^2 + 609^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 11 ways as a sum of consecutive naturals, for example, 11259 + ... + 11438.

2^2042730 is an apocalyptic number.

2042730 is an abundant number, since it is smaller than the sum of its proper divisors (3268602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2042730 is a wasteful number, since it uses less digits than its factorization.

2042730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22710 (or 22707 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2042730 is about 1429.2410573448. The cubic root of 2042730 is about 126.8830634622.

It can be divided in two parts, 2042 and 730, that added together give a palindrome (2772).

The spelling of 2042730 in words is "two million, forty-two thousand, seven hundred thirty".