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542361 = 3347521

542361 has 8 divisors (see below), whose sum is σ = 726624. Its totient is φ = 359840.

The previous prime is 542323. The next prime is 542371. The reversal of 542361 is 163245.

It can be divided in two parts, 542 and 361, that added together give a triangular number (903 = T42).

It is a happy number.

542361 is a nontrivial binomial coefficient, being equal to C(1042, 2).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-542361 is a prime.

It is a d-powerful number, because it can be written as 55 + 42 + 312 + 2 + 65 + 1 .

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542361.

It is not an unprimeable number, because it can be changed into a prime (542371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (90828).

2542361 is an apocalyptic number.

542361 is the 1041-st triangular number and also the 521-st hexagonal number.

It is an amenable number.

542361 is a deficient number, since it is larger than the sum of its proper divisors (184263).

542361 is a wasteful number, since it uses less digits than its factorization.

542361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 720, while the sum is 21.

The square root of 542361 is about 736.4516277394. The cubic root of 542361 is about 81.5510363213.

The spelling of 542361 in words is "five hundred forty-two thousand, three hundred sixty-one".

Divisors: 1 3 347 521 1041 1563 180787 542361