122040403440 has 40 divisors (see below), whose sum is σ = 378325251408. Its totient is φ = 32544107520.

The previous prime is 122040403421. The next prime is 122040403447. The reversal of 122040403440 is 44304040221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 122040403440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122040403447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254250601 + ... + 254251080.

Almost surely, 2^122040403440 is an apocalyptic number.

122040403440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122040403440 is an abundant number, since it is smaller than the sum of its proper divisors (256284847968).

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

122040403440 is a wasteful number, since it uses less digits than its factorization.

122040403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508501697 (or 508501691 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 122040403440 its reverse (44304040221), we get a palindrome (166344443661).

The spelling of 122040403440 in words is "one hundred twenty-two billion, forty million, four hundred three thousand, four hundred forty".