1356644142 has 48 divisors (see below), whose sum is σ = 3362317920. Its totient is φ = 387265536.

The previous prime is 1356644141. The next prime is 1356644161. The reversal of 1356644142 is 2414466531.

1356644142 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 644 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1356644097 and 1356644106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356644141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158238 + ... + 166590.

It is an arithmetic number, because the mean of its divisors is an integer number (70048290).

Almost surely, 2^1356644142 is an apocalyptic number.

1356644142 is an abundant number, since it is smaller than the sum of its proper divisors (2005673778).

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

1356644142 is a wasteful number, since it uses less digits than its factorization.

1356644142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657 (or 9654 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1356644142 is about 36832.6504883914. The cubic root of 1356644142 is about 1107.0196112398.

The spelling of 1356644142 in words is "one billion, three hundred fifty-six million, six hundred forty-four thousand, one hundred forty-two".