340421012 has 6 divisors (see below), whose sum is σ = 595736778. Its totient is φ = 170210504.

The previous prime is 340420987. The next prime is 340421017. The reversal of 340421012 is 210124043.

It can be written as a sum of positive squares in only one way, i.e., 273770116 + 66650896 = 16546^2 + 8164^2 .

It is a super-2 number, since 2×340421012² = 231772930822208288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340421017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42552623 + ... + 42552630.

It is an arithmetic number, because the mean of its divisors is an integer number (99289463).

Almost surely, 2^340421012 is an apocalyptic number.

It is an amenable number.

340421012 is a deficient number, since it is larger than the sum of its proper divisors (255315766).

340421012 is a wasteful number, since it uses less digits than its factorization.

340421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85105257 (or 85105255 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 340421012 is about 18450.5016733963. The cubic root of 340421012 is about 698.2411708387.

Adding to 340421012 its reverse (210124043), we get a palindrome (550545055).

The spelling of 340421012 in words is "three hundred forty million, four hundred twenty-one thousand, twelve".