340421442 has 64 divisors (see below), whose sum is σ = 740154240. Its totient is φ = 104025600.

The previous prime is 340421441. The next prime is 340421443. The reversal of 340421442 is 244124043.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (340421441) and next prime (340421443).

It is not an unprimeable number, because it can be changed into a prime (340421441) 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, 808392 + ... + 808812.

It is an arithmetic number, because the mean of its divisors is an integer number (11564910).

Almost surely, 2^340421442 is an apocalyptic number.

340421442 is an abundant number, since it is smaller than the sum of its proper divisors (399732798).

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

340421442 is a wasteful number, since it uses less digits than its factorization.

340421442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

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

The square root of 340421442 is about 18450.5133261923. The cubic root of 340421442 is about 698.2414648311.

Adding to 340421442 its reverse (244124043), we get a palindrome (584545485).

The spelling of 340421442 in words is "three hundred forty million, four hundred twenty-one thousand, four hundred forty-two".