1406143423442 has 12 divisors (see below), whose sum is σ = 2240584936890. Its totient is φ = 661714551936.

The previous prime is 1406143423429. The next prime is 1406143423471. The reversal of 1406143423442 is 2443243416041.

It can be written as a sum of positive squares in 3 ways, for example, as 1320961747561 + 85181675881 = 1149331^2 + 291859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1406143423396 and 1406143423405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1216386467 + ... + 1216387622.

Almost surely, 2^{1406143423442} is an apocalyptic number.

1406143423442 is a deficient number, since it is larger than the sum of its proper divisors (834441513448).

1406143423442 is a wasteful number, since it uses less digits than its factorization.

1406143423442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432774125 (or 2432774108 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 1406143423442 its reverse (2443243416041), we get a palindrome (3849386839483).

The spelling of 1406143423442 in words is "one trillion, four hundred six billion, one hundred forty-three million, four hundred twenty-three thousand, four hundred forty-two".