4020951 has 32 divisors (see below), whose sum is σ = 6324480. Its totient is φ = 2265120.

The previous prime is 4020949. The next prime is 4020977. The reversal of 4020951 is 1590204.

It is not a de Polignac number, because 4020951 - 2¹ = 4020949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75841 + ... + 75893.

It is an arithmetic number, because the mean of its divisors is an integer number (197640).

Almost surely, 2^4020951 is an apocalyptic number.

4020951 is a deficient number, since it is larger than the sum of its proper divisors (2303529).

4020951 is a wasteful number, since it uses less digits than its factorization.

4020951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4020951 is about 2005.2309093967. The cubic root of 4020951 is about 159.0167697197.

The spelling of 4020951 in words is "four million, twenty thousand, nine hundred fifty-one".