1020401404 has 48 divisors (see below), whose sum is σ = 2076006240. Its totient is φ = 433704960.

The previous prime is 1020401383. The next prime is 1020401407. The reversal of 1020401404 is 4041040201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020401407) 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 15 ways as a sum of consecutive naturals, for example, 113092 + ... + 121780.

It is an arithmetic number, because the mean of its divisors is an integer number (43250130).

Almost surely, 2^1020401404 is an apocalyptic number.

It is an amenable number.

1020401404 is an abundant number, since it is smaller than the sum of its proper divisors (1055604836).

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

1020401404 is a wasteful number, since it uses less digits than its factorization.

1020401404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8878 (or 8876 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1020401404 is about 31943.7224505849. The cubic root of 1020401404 is about 1006.7547387724.

Adding to 1020401404 its reverse (4041040201), we get a palindrome (5061441605).

The spelling of 1020401404 in words is "one billion, twenty million, four hundred one thousand, four hundred four".