403044243240 has 192 divisors, whose sum is σ = 1248418359360. Its totient is φ = 104072601600.

The previous prime is 403044243221. The next prime is 403044243269. The reversal of 403044243240 is 42342440304.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 403044243198 and 403044243207.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27980040 + ... + 27994440.

It is an arithmetic number, because the mean of its divisors is an integer number (6502178955).

Almost surely, 2^403044243240 is an apocalyptic number.

403044243240 is a gapful number since it is divisible by the number (40) 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 403044243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624209179680).

403044243240 is an abundant number, since it is smaller than the sum of its proper divisors (845374116120).

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

403044243240 is a wasteful number, since it uses less digits than its factorization.

403044243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14600 (or 14537 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 403044243240 its reverse (42342440304), we get a palindrome (445386683544).

The spelling of 403044243240 in words is "four hundred three billion, forty-four million, two hundred forty-three thousand, two hundred forty".