40234121421 has 64 divisors (see below), whose sum is σ = 61444400640. Its totient is φ = 23229296640.

The previous prime is 40234121407. The next prime is 40234121453. The reversal of 40234121421 is 12412143204.

It is not a de Polignac number, because 40234121421 - 2¹⁰ = 40234120397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40234121391 and 40234121400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234121491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25004865 + ... + 25006473.

It is an arithmetic number, because the mean of its divisors is an integer number (960068760).

Almost surely, 2^40234121421 is an apocalyptic number.

It is an amenable number.

40234121421 is a deficient number, since it is larger than the sum of its proper divisors (21210279219).

40234121421 is a wasteful number, since it uses less digits than its factorization.

40234121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 40234121421 its reverse (12412143204), we get a palindrome (52646264625).

The spelling of 40234121421 in words is "forty billion, two hundred thirty-four million, one hundred twenty-one thousand, four hundred twenty-one".