4000420745 has 16 divisors (see below), whose sum is σ = 4905439488. Its totient is φ = 3130458240.

The previous prime is 4000420733. The next prime is 4000420771. The reversal of 4000420745 is 5470240004.

It is not a de Polignac number, because 4000420745 - 2²⁶ = 3933311881 is a prime.

It is a super-2 number, since 2×4000420745² = 32006732274052710050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 536090 + ... + 543500.

It is an arithmetic number, because the mean of its divisors is an integer number (306589968).

Almost surely, 2^4000420745 is an apocalyptic number.

It is an amenable number.

4000420745 is a deficient number, since it is larger than the sum of its proper divisors (905018743).

4000420745 is a wasteful number, since it uses less digits than its factorization.

4000420745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9760.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 4000420745 is about 63248.8793971877. The cubic root of 4000420745 is about 1587.4567076048.

Adding to 4000420745 its reverse (5470240004), we get a palindrome (9470660749).

The spelling of 4000420745 in words is "four billion, four hundred twenty thousand, seven hundred forty-five".