1423130402440 has 32 divisors (see below), whose sum is σ = 3202084287000. Its totient is φ = 569244893184.

The previous prime is 1423130402423. The next prime is 1423130402471. The reversal of 1423130402440 is 442040313241.

It can be written as a sum of positive squares in 4 ways, for example, as 986323087044 + 436807315396 = 993138^2 + 660914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1423130402399 and 1423130402408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3847546 + ... + 4201174.

Almost surely, 2^{1423130402440} is an apocalyptic number.

1423130402440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423130402440 is an abundant number, since it is smaller than the sum of its proper divisors (1778953884560).

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

1423130402440 is a wasteful number, since it uses less digits than its factorization.

1423130402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454249 (or 454245 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1423130402440 its reverse (442040313241), we get a palindrome (1865170715681).

The spelling of 1423130402440 in words is "one trillion, four hundred twenty-three billion, one hundred thirty million, four hundred two thousand, four hundred forty".