1431940 has 12 divisors (see below), whose sum is σ = 3007116. Its totient is φ = 572768.

The previous prime is 1431929. The next prime is 1431959. The reversal of 1431940 is 491341.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 419904 = 1006^2 + 648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35779 + ... + 35818.

It is an arithmetic number, because the mean of its divisors is an integer number (250593).

2^1431940 is an apocalyptic number.

1431940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431940 is an abundant number, since it is smaller than the sum of its proper divisors (1575176).

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

1431940 is a wasteful number, since it uses less digits than its factorization.

1431940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71606 (or 71604 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1431940 is about 1196.6369541344. The cubic root of 1431940 is about 112.7132416396.

The spelling of 1431940 in words is "one million, four hundred thirty-one thousand, nine hundred forty".