126143597890 has 16 divisors (see below), whose sum is σ = 227105699832. Its totient is φ = 50446945024.

The previous prime is 126143597869. The next prime is 126143597953. The reversal of 126143597890 is 98795341621.

It is a happy number.

It is a Cunningham number, because it is equal to 355167²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 83504238841 + 42639359049 = 288971^2 + 206493^2 .

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, 1261189 + ... + 1357528.

It is a 1-persistent number, because it is pandigital, but 2⋅126143597890 = 252287195780 is not.

Almost surely, 2^126143597890 is an apocalyptic number.

126143597890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126143597890 is a deficient number, since it is larger than the sum of its proper divisors (100962101942).

126143597890 is a wasteful number, since it uses less digits than its factorization.

126143597890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623541.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 126143597890 in words is "one hundred twenty-six billion, one hundred forty-three million, five hundred ninety-seven thousand, eight hundred ninety".