1542402 has 20 divisors (see below), whose sum is σ = 3456486. Its totient is φ = 514080.

The previous prime is 1542383. The next prime is 1542421. The reversal of 1542402 is 2042451.

It is an interprime number because it is at equal distance from previous prime (1542383) and next prime (1542421).

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 194481 = 1161^2 + 441^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4599 + ... + 4922.

2^1542402 is an apocalyptic number.

1542402 is an abundant number, since it is smaller than the sum of its proper divisors (1914084).

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

1542402 is an equidigital number, since it uses as much as digits as its factorization.

1542402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535 (or 9526 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1542402 is about 1241.9347808963. The cubic root of 1542402 is about 115.5400434607.

Adding to 1542402 its reverse (2042451), we get a palindrome (3584853).

It can be divided in two parts, 154 and 2402, that added together give a triangular number (2556 = T₇₁).

The spelling of 1542402 in words is "one million, five hundred forty-two thousand, four hundred two".