402040421011 has 8 divisors (see below), whose sum is σ = 407718862848. Its totient is φ = 396362421000.

The previous prime is 402040420967. The next prime is 402040421053. The reversal of 402040421011 is 110124040204.

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

It is a cyclic number.

It is not a de Polignac number, because 402040421011 - 2²⁹ = 401503550099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402040421011.

It is not an unprimeable number, because it can be changed into a prime (402040421411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006766 + ... + 2197996.

It is an arithmetic number, because the mean of its divisors is an integer number (50964857856).

Almost surely, 2^402040421011 is an apocalyptic number.

402040421011 is a deficient number, since it is larger than the sum of its proper divisors (5678441837).

402040421011 is a wasteful number, since it uses less digits than its factorization.

402040421011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220913.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 402040421011 its reverse (110124040204), we get a palindrome (512164461215).

The spelling of 402040421011 in words is "four hundred two billion, forty million, four hundred twenty-one thousand, eleven".