1340430042 has 32 divisors (see below), whose sum is σ = 3244067712. Its totient is φ = 360451584.

The previous prime is 1340430037. The next prime is 1340430067. The reversal of 1340430042 is 2400340431.

It is a super-2 number, since 2×1340430042² = 3593505394992243528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937963 + ... + 939390.

It is an arithmetic number, because the mean of its divisors is an integer number (101377116).

Almost surely, 2^1340430042 is an apocalyptic number.

1340430042 is an abundant number, since it is smaller than the sum of its proper divisors (1903637670).

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

1340430042 is a wasteful number, since it uses less digits than its factorization.

1340430042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877382.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1340430042 is about 36611.8838903436. The cubic root of 1340430042 is about 1102.5916966528.

Adding to 1340430042 its reverse (2400340431), we get a palindrome (3740770473).

The spelling of 1340430042 in words is "one billion, three hundred forty million, four hundred thirty thousand, forty-two".