642738114 has 24 divisors (see below), whose sum is σ = 1424986992. Its totient is φ = 209263320.

The previous prime is 642738101. The next prime is 642738127. The reversal of 642738114 is 411837246.

642738114 is a `hidden beast` number, since 642 + 7 + 3 + 8 + 1 + 1 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (642738101) and next prime (642738127).

It is a super-2 number, since 2×642738114² = 826224566376553992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414432 + ... + 415979.

It is an arithmetic number, because the mean of its divisors is an integer number (59374458).

Almost surely, 2^642738114 is an apocalyptic number.

642738114 is an abundant number, since it is smaller than the sum of its proper divisors (782248878).

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

642738114 is a wasteful number, since it uses less digits than its factorization.

642738114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830462 (or 830459 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 642738114 is about 25352.2802524743. The cubic root of 642738114 is about 863.0011041441.

The spelling of 642738114 in words is "six hundred forty-two million, seven hundred thirty-eight thousand, one hundred fourteen".