40102041421 has 24 divisors (see below), whose sum is σ = 48291296480. Its totient is φ = 33006051072.

The previous prime is 40102041349. The next prime is 40102041439. The reversal of 40102041421 is 12414020104.

It is not a de Polignac number, because 40102041421 - 2¹⁹ = 40101517133 is a prime.

It is a super-2 number, since 2×40102041421² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102045421) 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 23 ways as a sum of consecutive naturals, for example, 209511 + ... + 352276.

Almost surely, 2^40102041421 is an apocalyptic number.

It is an amenable number.

40102041421 is a deficient number, since it is larger than the sum of its proper divisors (8189255059).

40102041421 is a wasteful number, since it uses less digits than its factorization.

40102041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561853 (or 561836 counting only the distinct ones).

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

Adding to 40102041421 its reverse (12414020104), we get a palindrome (52516061525).

The spelling of 40102041421 in words is "forty billion, one hundred two million, forty-one thousand, four hundred twenty-one".