7021642 has 8 divisors (see below), whose sum is σ = 10777536. Its totient is φ = 3429132.

The previous prime is 7021627. The next prime is 7021643. The reversal of 7021642 is 2461207.

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

It is not an unprimeable number, because it can be changed into a prime (7021643) 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, 40738 + ... + 40909.

It is an arithmetic number, because the mean of its divisors is an integer number (1347192).

Almost surely, 2^7021642 is an apocalyptic number.

7021642 is a deficient number, since it is larger than the sum of its proper divisors (3755894).

7021642 is a wasteful number, since it uses less digits than its factorization.

7021642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81692.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7021642 is about 2649.8381082625. The cubic root of 7021642 is about 191.4900566796.

Adding to 7021642 its reverse (2461207), we get a palindrome (9482849).

It can be divided in two parts, 70 and 21642, that added together give a palindrome (21712).

The spelling of 7021642 in words is "seven million, twenty-one thousand, six hundred forty-two".