542694251 has 8 divisors (see below), whose sum is σ = 600369408. Its totient is φ = 486409000.

The previous prime is 542694239. The next prime is 542694259. The reversal of 542694251 is 152496245.

It is a happy number.

542694251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 542694251 - 2²² = 538499947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542694259) 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, 346655 + ... + 348216.

It is an arithmetic number, because the mean of its divisors is an integer number (75046176).

Almost surely, 2^542694251 is an apocalyptic number.

542694251 is a deficient number, since it is larger than the sum of its proper divisors (57675157).

542694251 is a wasteful number, since it uses less digits than its factorization.

542694251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694953.

The product of its digits is 86400, while the sum is 38.

The square root of 542694251 is about 23295.7989989612. The cubic root of 542694251 is about 815.6773577679.

The spelling of 542694251 in words is "five hundred forty-two million, six hundred ninety-four thousand, two hundred fifty-one".