1020400123114 has 8 divisors (see below), whose sum is σ = 1530609984288. Its totient is φ = 510196795020.

The previous prime is 1020400123091. The next prime is 1020400123117. The reversal of 1020400123114 is 4113210040201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1020400123114² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020400123091 and 1020400123100.

It is not an unprimeable number, because it can be changed into a prime (1020400123117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222092 + ... + 1879975.

It is an arithmetic number, because the mean of its divisors is an integer number (191326248036).

Almost surely, 2^{1020400123114} is an apocalyptic number.

1020400123114 is a deficient number, since it is larger than the sum of its proper divisors (510209861174).

1020400123114 is a wasteful number, since it uses less digits than its factorization.

1020400123114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266540.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1020400123114 its reverse (4113210040201), we get a palindrome (5133610163315).

The spelling of 1020400123114 in words is "one trillion, twenty billion, four hundred million, one hundred twenty-three thousand, one hundred fourteen".