4021534624 has 12 divisors (see below), whose sum is σ = 7917396354. Its totient is φ = 2010767296.

The previous prime is 4021534619. The next prime is 4021534663. The reversal of 4021534624 is 4264351204.

It can be written as a sum of positive squares in only one way, i.e., 3188635024 + 832899600 = 56468^2 + 28860^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62836447 + ... + 62836510.

Almost surely, 2^4021534624 is an apocalyptic number.

It is an amenable number.

4021534624 is a deficient number, since it is larger than the sum of its proper divisors (3895861730).

4021534624 is a wasteful number, since it uses less digits than its factorization.

4021534624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125672967 (or 125672959 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 4021534624 is about 63415.5708324068. The cubic root of 4021534624 is about 1590.2446288429.

Adding to 4021534624 its reverse (4264351204), we get a palindrome (8285885828).

The spelling of 4021534624 in words is "four billion, twenty-one million, five hundred thirty-four thousand, six hundred twenty-four".