40005673421 has 8 divisors (see below), whose sum is σ = 48127126080. Its totient is φ = 32485809888.

The previous prime is 40005673417. The next prime is 40005673439. The reversal of 40005673421 is 12437650004.

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

It is not a de Polignac number, because 40005673421 - 2² = 40005673417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40005673441) 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, 150397136 + ... + 150397401.

It is an arithmetic number, because the mean of its divisors is an integer number (6015890760).

Almost surely, 2^40005673421 is an apocalyptic number.

It is an amenable number.

40005673421 is a deficient number, since it is larger than the sum of its proper divisors (8121452659).

40005673421 is a wasteful number, since it uses less digits than its factorization.

40005673421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300794563.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 40005673421 in words is "forty billion, five million, six hundred seventy-three thousand, four hundred twenty-one".