42121020441432 has 64 divisors (see below), whose sum is σ = 107598584148480. Its totient is φ = 13735729284992.

The previous prime is 42121020441407. The next prime is 42121020441469. The reversal of 42121020441432 is 23414402012124.

It is a super-2 number, since 2×42121020441432² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42121020441432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47273328 + ... + 48156095.

It is an arithmetic number, because the mean of its divisors is an integer number (1681227877320).

Almost surely, 2^{42121020441432} is an apocalyptic number.

It is an amenable number.

42121020441432 is an abundant number, since it is smaller than the sum of its proper divisors (65477563707048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42121020441432 is a wasteful number, since it uses less digits than its factorization.

42121020441432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95429832 (or 95429828 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 42121020441432 its reverse (23414402012124), we get a palindrome (65535422453556).

The spelling of 42121020441432 in words is "forty-two trillion, one hundred twenty-one billion, twenty million, four hundred forty-one thousand, four hundred thirty-two".