123240340202 has 16 divisors (see below), whose sum is σ = 211273745472. Its totient is φ = 52816140960.

The previous prime is 123240340193. The next prime is 123240340211. The reversal of 123240340202 is 202043042321.

It is an interprime number because it is at equal distance from previous prime (123240340193) and next prime (123240340211).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022033 + ... + 1136235.

It is an arithmetic number, because the mean of its divisors is an integer number (13204609092).

Almost surely, 2^123240340202 is an apocalyptic number.

123240340202 is a deficient number, since it is larger than the sum of its proper divisors (88033405270).

123240340202 is a wasteful number, since it uses less digits than its factorization.

123240340202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191293.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 123240340202 its reverse (202043042321), we get a palindrome (325283382523).

The spelling of 123240340202 in words is "one hundred twenty-three billion, two hundred forty million, three hundred forty thousand, two hundred two".