1254028236138 has 48 divisors (see below), whose sum is σ = 2719909573056. Its totient is φ = 417571390080.

The previous prime is 1254028236103. The next prime is 1254028236143. The reversal of 1254028236138 is 8316328204521.

1254028236138 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 0 + 2 + 8 + 23 + 613 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1254028236093 and 1254028236102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155063131 + ... + 155071217.

It is an arithmetic number, because the mean of its divisors is an integer number (56664782772).

Almost surely, 2^{1254028236138} is an apocalyptic number.

1254028236138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1254028236138 is an abundant number, since it is smaller than the sum of its proper divisors (1465881336918).

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

1254028236138 is a wasteful number, since it uses less digits than its factorization.

1254028236138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16059 (or 16056 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 1254028236138 in words is "one trillion, two hundred fifty-four billion, twenty-eight million, two hundred thirty-six thousand, one hundred thirty-eight".