1241129440 has 48 divisors (see below), whose sum is σ = 2975957712. Its totient is φ = 489037824.

The previous prime is 1241129437. The next prime is 1241129441. The reversal of 1241129440 is 449211421.

It is a junction number, because it is equal to n+sod(n) for n = 1241129399 and 1241129408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241129441) 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, 47169 + ... + 68608.

It is an arithmetic number, because the mean of its divisors is an integer number (61999119).

Almost surely, 2^1241129440 is an apocalyptic number.

1241129440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241129440 is an abundant number, since it is smaller than the sum of its proper divisors (1734828272).

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

1241129440 is a wasteful number, since it uses less digits than its factorization.

1241129440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115859 (or 115851 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1241129440 is about 35229.6670435586. The cubic root of 1241129440 is about 1074.6631546030.

The spelling of 1241129440 in words is "one billion, two hundred forty-one million, one hundred twenty-nine thousand, four hundred forty".