1369542240 has 144 divisors (see below), whose sum is σ = 5098491216. Its totient is φ = 332006400.

The previous prime is 1369542233. The next prime is 1369542257. The reversal of 1369542240 is 422459631.

It is a happy number.

1369542240 is a `hidden beast` number, since 1 + 369 + 54 + 2 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1369542195 and 1369542204.

It is a congruent number.

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, 27391 + ... + 59070.

It is an arithmetic number, because the mean of its divisors is an integer number (35406189).

Almost surely, 2^1369542240 is an apocalyptic number.

1369542240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1369542240 is an abundant number, since it is smaller than the sum of its proper divisors (3728948976).

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

1369542240 is a wasteful number, since it uses less digits than its factorization.

1369542240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86493 (or 86482 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1369542240 is about 37007.3268421268. The cubic root of 1369542240 is about 1110.5168277420.

The spelling of 1369542240 in words is "one billion, three hundred sixty-nine million, five hundred forty-two thousand, two hundred forty".