1020418421 has 8 divisors (see below), whose sum is σ = 1178665344. Its totient is φ = 873085120.

The previous prime is 1020418411. The next prime is 1020418439. The reversal of 1020418421 is 1248140201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020418421 - 2¹⁰ = 1020417397 is a prime.

It is a super-2 number, since 2×1020418421² = 2082507507832266482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020418411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2728205 + ... + 2728578.

It is an arithmetic number, because the mean of its divisors is an integer number (147333168).

Almost surely, 2^1020418421 is an apocalyptic number.

1020418421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020418421 is a deficient number, since it is larger than the sum of its proper divisors (158246923).

1020418421 is a wasteful number, since it uses less digits than its factorization.

1020418421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456811.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1020418421 is about 31943.9888085380. The cubic root of 1020418421 is about 1006.7603352139.

Adding to 1020418421 its reverse (1248140201), we get a palindrome (2268558622).

The spelling of 1020418421 in words is "one billion, twenty million, four hundred eighteen thousand, four hundred twenty-one".