1912424140 has 96 divisors (see below), whose sum is σ = 4638332160. Its totient is φ = 655737600.

The previous prime is 1912424117. The next prime is 1912424147. The reversal of 1912424140 is 414242191.

It is a junction number, because it is equal to n+sod(n) for n = 1912424099 and 1912424108.

It is not an unprimeable number, because it can be changed into a prime (1912424147) 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, 270855 + ... + 277825.

It is an arithmetic number, because the mean of its divisors is an integer number (48315960).

Almost surely, 2^1912424140 is an apocalyptic number.

1912424140 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 1912424140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319166080).

1912424140 is an abundant number, since it is smaller than the sum of its proper divisors (2725908020).

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

1912424140 is a wasteful number, since it uses less digits than its factorization.

1912424140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063 (or 7061 counting only the distinct ones).

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

The square root of 1912424140 is about 43731.2718772276. The cubic root of 1912424140 is about 1241.2561282487.

It can be divided in two parts, 19124 and 24140, that added together give a square (43264 = 208²).

The spelling of 1912424140 in words is "one billion, nine hundred twelve million, four hundred twenty-four thousand, one hundred forty".