91402742 has 8 divisors (see below), whose sum is σ = 137405496. Its totient is φ = 45600912.

The previous prime is 91402723. The next prime is 91402747. The reversal of 91402742 is 24720419.

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

It is a super-2 number, since 2×91402742² = 16708922490237128, which contains 22 as substring.

91402742 is a modest number, since divided by 2742 gives 914 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91402747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49088 + ... + 50915.

It is an arithmetic number, because the mean of its divisors is an integer number (17175687).

Almost surely, 2^91402742 is an apocalyptic number.

91402742 is a deficient number, since it is larger than the sum of its proper divisors (46002754).

91402742 is a wasteful number, since it uses less digits than its factorization.

91402742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100462.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 91402742 is about 9560.4781261190. The cubic root of 91402742 is about 450.4567247705.

The spelling of 91402742 in words is "ninety-one million, four hundred two thousand, seven hundred forty-two".