4021029 has 8 divisors (see below), whose sum is σ = 5957120. Its totient is φ = 2680668.

The previous prime is 4021019. The next prime is 4021033. The reversal of 4021029 is 9201204.

It is not a de Polignac number, because 4021029 - 2⁴ = 4021013 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021009) 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 7 ways as a sum of consecutive naturals, for example, 74437 + ... + 74490.

It is an arithmetic number, because the mean of its divisors is an integer number (744640).

Almost surely, 2^4021029 is an apocalyptic number.

It is an amenable number.

4021029 is a deficient number, since it is larger than the sum of its proper divisors (1936091).

4021029 is a wasteful number, since it uses less digits than its factorization.

4021029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148936 (or 148930 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4021029 is about 2005.2503584341. The cubic root of 4021029 is about 159.0177979365.

It can be divided in two parts, 402 and 1029, that added together give a triangular number (1431 = T₅₃).

The spelling of 4021029 in words is "four million, twenty-one thousand, twenty-nine".