42979403 has 4 divisors (see below), whose sum is σ = 43978968. Its totient is φ = 41979840.

The previous prime is 42979399. The next prime is 42979427. The reversal of 42979403 is 30497924.

42979403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42979403 - 2² = 42979399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42969403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 499718 + ... + 499803.

It is an arithmetic number, because the mean of its divisors is an integer number (10994742).

Almost surely, 2^42979403 is an apocalyptic number.

42979403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42979403 is a deficient number, since it is larger than the sum of its proper divisors (999565).

42979403 is an equidigital number, since it uses as much as digits as its factorization.

42979403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999564.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 42979403 is about 6555.8678296622. The cubic root of 42979403 is about 350.2838595159.

The spelling of 42979403 in words is "forty-two million, nine hundred seventy-nine thousand, four hundred three".