126434511240 has 128 divisors (see below), whose sum is σ = 402801033600. Its totient is φ = 31658618880.

The previous prime is 126434511227. The next prime is 126434511241. The reversal of 126434511240 is 42115434621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (126434511241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12270 + ... + 503010.

It is an arithmetic number, because the mean of its divisors is an integer number (3146883075).

Almost surely, 2^126434511240 is an apocalyptic number.

126434511240 is a gapful number since it is divisible by the number (10) 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 126434511240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201400516800).

126434511240 is an abundant number, since it is smaller than the sum of its proper divisors (276366522360).

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

126434511240 is a wasteful number, since it uses less digits than its factorization.

126434511240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490887 (or 490883 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 126434511240 its reverse (42115434621), we get a palindrome (168549945861).

The spelling of 126434511240 in words is "one hundred twenty-six billion, four hundred thirty-four million, five hundred eleven thousand, two hundred forty".