1011403420 has 72 divisors (see below), whose sum is σ = 2219503104. Its totient is φ = 387109632.

The previous prime is 1011403417. The next prime is 1011403433. The reversal of 1011403420 is 243041101.

It is a junction number, because it is equal to n+sod(n) for n = 1011403394 and 1011403403.

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, 2640549 + ... + 2640931.

It is an arithmetic number, because the mean of its divisors is an integer number (30826432).

Almost surely, 2^1011403420 is an apocalyptic number.

1011403420 is a gapful number since it is divisible by the number (10) 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 1011403420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109751552).

1011403420 is an abundant number, since it is smaller than the sum of its proper divisors (1208099684).

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

1011403420 is a wasteful number, since it uses less digits than its factorization.

1011403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1011403420 is about 31802.5693930538. The cubic root of 1011403420 is about 1003.7867821803.

Adding to 1011403420 its reverse (243041101), we get a palindrome (1254444521).

The spelling of 1011403420 in words is "one billion, eleven million, four hundred three thousand, four hundred twenty".