1242684938398 has 32 divisors (see below), whose sum is σ = 1991628662400. Its totient is φ = 579793715424.

The previous prime is 1242684938389. The next prime is 1242684938401. The reversal of 1242684938398 is 8938394862421.

It is a super-2 number, since 2×1242684938398² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32210536 + ... + 32249092.

It is an arithmetic number, because the mean of its divisors is an integer number (62238395700).

Almost surely, 2^{1242684938398} is an apocalyptic number.

1242684938398 is a deficient number, since it is larger than the sum of its proper divisors (748943724002).

1242684938398 is a wasteful number, since it uses less digits than its factorization.

1242684938398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51304.

The product of its digits is 143327232, while the sum is 67.

The spelling of 1242684938398 in words is "one trillion, two hundred forty-two billion, six hundred eighty-four million, nine hundred thirty-eight thousand, three hundred ninety-eight".