40120001002 has 8 divisors (see below), whose sum is σ = 60192993636. Its totient is φ = 20055669792.

The previous prime is 40120000993. The next prime is 40120001023. The reversal of 40120001002 is 20010002104.

It can be written as a sum of positive squares in 2 ways, for example, as 39815812521 + 304188481 = 199539^2 + 17441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40120001002² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40120001002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153763 + ... + 2172310.

Almost surely, 2^40120001002 is an apocalyptic number.

40120001002 is a deficient number, since it is larger than the sum of its proper divisors (20072992634).

40120001002 is a wasteful number, since it uses less digits than its factorization.

40120001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330712.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 40120001002 its reverse (20010002104), we get a palindrome (60130003106).

The spelling of 40120001002 in words is "forty billion, one hundred twenty million, one thousand, two".