1021420041432 has 96 divisors (see below), whose sum is σ = 2971850983920. Its totient is φ = 291697271040.

The previous prime is 1021420041413. The next prime is 1021420041449. The reversal of 1021420041432 is 2341400241201.

It is a super-2 number, since 2×1021420041432² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2314978 + ... + 2720654.

Almost surely, 2^{1021420041432} is an apocalyptic number.

1021420041432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021420041432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485925491960).

1021420041432 is an abundant number, since it is smaller than the sum of its proper divisors (1950430942488).

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

1021420041432 is a wasteful number, since it uses less digits than its factorization.

1021420041432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407841 (or 407830 counting only the distinct ones).

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

Adding to 1021420041432 its reverse (2341400241201), we get a palindrome (3362820282633).

The spelling of 1021420041432 in words is "one trillion, twenty-one billion, four hundred twenty million, forty-one thousand, four hundred thirty-two".