42154797 has 4 divisors (see below), whose sum is σ = 56206400. Its totient is φ = 28103196.

The previous prime is 42154793. The next prime is 42154807. The reversal of 42154797 is 79745124.

42154797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42154797 - 2² = 42154793 is a prime.

It is a super-2 number, since 2×42154797² = 3554053820222418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7025797 + ... + 7025802.

It is an arithmetic number, because the mean of its divisors is an integer number (14051600).

Almost surely, 2^42154797 is an apocalyptic number.

It is an amenable number.

42154797 is a deficient number, since it is larger than the sum of its proper divisors (14051603).

42154797 is a wasteful number, since it uses less digits than its factorization.

42154797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14051602.

The product of its digits is 70560, while the sum is 39.

The square root of 42154797 is about 6492.6725622043. The cubic root of 42154797 is about 348.0291873392.

The spelling of 42154797 in words is "forty-two million, one hundred fifty-four thousand, seven hundred ninety-seven".