42005453210421 has 32 divisors (see below), whose sum is σ = 60331433336832. Its totient is φ = 25920374863680.

The previous prime is 42005453210411. The next prime is 42005453210431. The reversal of 42005453210421 is 12401235450024.

It is an interprime number because it is at equal distance from previous prime (42005453210411) and next prime (42005453210431).

It is not a de Polignac number, because 42005453210421 - 2¹⁹ = 42005452686133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42005453210411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33551526 + ... + 34780968.

It is an arithmetic number, because the mean of its divisors is an integer number (1885357291776).

Almost surely, 2^{42005453210421} is an apocalyptic number.

It is an amenable number.

42005453210421 is a deficient number, since it is larger than the sum of its proper divisors (18325980126411).

42005453210421 is a wasteful number, since it uses less digits than its factorization.

42005453210421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245473.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 42005453210421 its reverse (12401235450024), we get a palindrome (54406688660445).

The spelling of 42005453210421 in words is "forty-two trillion, five billion, four hundred fifty-three million, two hundred ten thousand, four hundred twenty-one".