42721034 has 16 divisors (see below), whose sum is σ = 68491008. Its totient is φ = 19914432.

The previous prime is 42721027. The next prime is 42721061. The reversal of 42721034 is 43012724.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234 + ... + 9509.

It is an arithmetic number, because the mean of its divisors is an integer number (4280688).

Almost surely, 2^42721034 is an apocalyptic number.

42721034 is a deficient number, since it is larger than the sum of its proper divisors (25769974).

42721034 is a wasteful number, since it uses less digits than its factorization.

42721034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11869.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42721034 is about 6536.1329545841. The cubic root of 42721034 is about 349.5805423997.

Adding to 42721034 its reverse (43012724), we get a palindrome (85733758).

The spelling of 42721034 in words is "forty-two million, seven hundred twenty-one thousand, thirty-four".