4000121007 has 16 divisors (see below), whose sum is σ = 5529420288. Its totient is φ = 2570352320.

The previous prime is 4000120903. The next prime is 4000121009. The reversal of 4000121007 is 7001210004.

It is not a de Polignac number, because 4000121007 - 2⁷ = 4000120879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000121009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185703 + ... + 206120.

It is an arithmetic number, because the mean of its divisors is an integer number (345588768).

Almost surely, 2^4000121007 is an apocalyptic number.

4000121007 is a deficient number, since it is larger than the sum of its proper divisors (1529299281).

4000121007 is a wasteful number, since it uses less digits than its factorization.

4000121007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391950.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 4000121007 is about 63246.5098404647. The cubic root of 4000121007 is about 1587.4170590267.

The spelling of 4000121007 in words is "four billion, one hundred twenty-one thousand, seven".