7142436 has 54 divisors (see below), whose sum is σ = 21007350. Its totient is φ = 2040192.

The previous prime is 7142419. The next prime is 7142437. The reversal of 7142436 is 6342417.

It can be written as a sum of positive squares in only one way, i.e., 5336100 + 1806336 = 2310^2 + 1344^2 .

It is a super-3 number, since 3×7142436³ (a number of 22 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (7142437) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 261 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (389025).

Almost surely, 2^7142436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7142436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10503675).

7142436 is an abundant number, since it is smaller than the sum of its proper divisors (13864914).

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

7142436 is a wasteful number, since it uses less digits than its factorization.

7142436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073 (or 4061 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 7142436 is about 2672.5336293487. The cubic root of 7142436 is about 192.5818935305.

The spelling of 7142436 in words is "seven million, one hundred forty-two thousand, four hundred thirty-six".