1020202421454 has 24 divisors (see below), whose sum is σ = 2211257669400. Its totient is φ = 339941460048.

The previous prime is 1020202421417. The next prime is 1020202421507. The reversal of 1020202421454 is 4541242020201.

It is a happy number.

1020202421454 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 202 + 4 + 2 + 1 + 454 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10451217 + ... + 10548380.

It is an arithmetic number, because the mean of its divisors is an integer number (92135736225).

Almost surely, 2^{1020202421454} is an apocalyptic number.

1020202421454 is an abundant number, since it is smaller than the sum of its proper divisors (1191055247946).

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

1020202421454 is a wasteful number, since it uses less digits than its factorization.

1020202421454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21002304 (or 21002301 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 1020202421454 its reverse (4541242020201), we get a palindrome (5561444441655).

The spelling of 1020202421454 in words is "one trillion, twenty billion, two hundred two million, four hundred twenty-one thousand, four hundred fifty-four".